How You Can Increase The Lifespan Of Your Projector Bulb Or Lamp

How You Can Increase The Lifespan Of Your Projector Bulb Or Lamp
By Clifford Tan

The replacement of projector bulbs is an all-too-frequent occurrence for anybody that has owned a home theater projector for any length of time. While a two thousand hour lifespan may sound like a lifetime to some people, rest assured it is not long before the projector lamp will need replacing. There are however, some general tips that can help to expand the life of a headlamp for the projection unit.

Do not touch the lamp with bare hands
One of the most frequent problems encountered is people replacing the bulbs with their bare hands. While this is fine for an ordinary light bulb, it is not a good practice for a projector lamp. The lamp in a projection unit burns much hotter than any regular light bulbs. The effects of touching it with bare skin are equally magnified and problematic.

Touching a projector bulb with the bare skin leaves traces of oil on the lamp surface. While this may seem a very minor detail, it is detrimental both to the bulb and the quality of the resulting multimedia display. The oils will get burnt onto the lamp and drastically reduce the lifespan. As the oil is baked into the surface, it actually diffuses the light being projected, reducing the lumens actually being sent to the refractive surfaces. The light will not be enough to project the image that has come to be expected from the home theater projection system. While the problem may not be noticeable at first, over the course of a little time, the quality will degrade to the point of not being viewable.

Turn off the projector power after turning off the lamp
It is highly recommended to turn the power on the projector to the off position only after having turned off the lamp and allowing it to cool. This will allow the cooling fans to do the job they were designed to do. While rapid cooling and heating result in repeated contractions and expansions of the bulb filament, it is much better that it be done more quickly with the cooling fans. Likewise, turning the projector on and allowing the cooling fans to run for a moment before turning on the lamp will help as well. This will add hours to bulb life expectancy and allow for longer hours of viewing pleasure on the home theater projection system.

Constant Movements
Constantly bumping or moving the projector, especially while it is hot can be very detrimental to the projector lamp. The filament in the bulb loses almost all tensile strength when it is heated during normal usage. It is much the same as the filament in a camp lantern. The principle is the same; the filament effectively becomes almost the same consistency as ash, making it extremely vulnerable to damage when it is hot. Even after proper cooling, the lamp filament is very sensitive. Care should be taken when moving the projector for whatever reason. While it is always a good idea to be careful with electronic equipment, some aspects of the home projector are actually a bit more sensitive.

It will usually be necessary to move the projector when cleaning the filters. As always, it is a good idea to move it carefully without jerking it around or bumping it any more than needed. Taking an extra moment or two to check the projector mount and make sure it is still securely fastened can also be beneficial and prevent slips and movement which may otherwise be harmful.

With a little care and a little preventative maintenance, the projector lamps will still need to be changed, but not nearly as often.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com

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Shall We Consider A Cheap Projector?

Shall We Consider A Cheap Projector?
By Clifford Tan

What exactly defines a cheap projector? Different people will have varying opinions in regard to this matter. For some people it implies a lack of quality where for some others, it will mean an opportunity to have high quality at a substantially reduced price. Finding a cheap projector does not require any forfeiture of quality. If it does, then the buyer should beware and shop around more. Cheap projectors are readily available featuring all of the benefits to establish a nice home theater system.

The DIY or Do It Yourself projector is a popular alternative for many people who could not otherwise afford a home projection system. While it does have some drawbacks for those who are not so mechanically inclined, it also has many benefits. If an individual has a rudimentary knowledge of electronics, this can be a good choice. There are many available plans for this type of project. Parts can be a little more difficult to find, but it can be done with a little research and some phone calls. While it is not a fix-all solution, it is a viable alternative if you are looking for a cheap projector.

Online auctions are another way of getting around the high cost of some quality projectors. When looking at auctions, it is best to note details in the description. Avoid any type of auction where any damage may be expressed or implied. There is no need in trying to find a cheap projector that will have to be repaired. More often than not, these projects end up in a closet or garage somewhere and never get finished, usually due to the high cost of fixing them.

It is a wise decision to look for auctions from people who have upgraded their theater systems or otherwise have a reasonable explanation for being rid of the projector. Most online auction sites have contact information available, so if there are unanswered questions, it is best to ask them BEFORE you bid. If the seller will not answer questions or answers them incompletely or indirectly, do not worry. It is probably not a good idea to bid on it either. The seller may often avoid specifics when there is damage that affects the performance of the projector. It is substantially better to lose a bid on a good projector than it is to win a bid on a damaged item. There will always be more auctions and more cheap projectors available.

One category that is often overlooked is a cheap alternative in home projector systems. These are commonly referred to as pre-made projectors. These are usually factory assembled DIY projectors. Often, a company that buys and sells projectors and parts will have better deals than the average person can get by buying their parts in bulk. Some of these companies have people that put together cheap projectors and sell them, generally on the internet, but sometimes on online auctions and by other means as well. If a person is not mechanically inclined, but still wants the benefit of a cheap projector, this is a very good alternative.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com.

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Choosing a Digital Projector

Choosing a Digital Projector
By Luke Kent

There are tons of digital projectors available and they are constantly dropping in price. However, when choosing a projectorfor yourself or your school there are a few practical things you should remember.

When choosing a projector you need to consider under whatcircumstances will you be presenting slide shows. The strength ofa projector's brightness is measured in units called lumens. Projectors range between 650-5000 lumens. The higher the lumensthe brighter the projector. Projectors that are less than 1000 lumens may not be great in a room with a lot of ambient light.For a classroom you should consider buying a projector with greater than 1000 lumens. If the projector will be used forlarger presentations, for 100 or more people, a projector withgreater than 3000 lumens may be needed.

A great accessory to your projector is a wireless mouse. Thesehave dropped considerably in price and allow the educator toface their audience when presenting the slide show. Whenchoosing a wireless mouse choose one that has a long rangeso that you can walk around when presenting.

Many projectors also come with remotes that help the presentermake adjustments to the slide shows quickly during the presentationwithout having to fiddle with the projector.

Remember when buying a projector analyze you needs first. You maynot need to spend as much as you think or you may need to spendthe extra cash to get a projector that suits your needs.

For more product reviews and teaching tips visit our site below.

Mr. L. Kent is an experienced educator and the lead consultant of http://MrKent.Net - Education Technology Made Simple. Feel free to visit the site and/or subscribe to our fantastic monthly newsletter at http://mrkent.net/php/?p=subscribe .

Luke Kent provides assistance to other educators by offering his interesting seminar, Teaching with Technology: A Fun Workshop for Technology Challenged Teachers. To book a seminar or a consultation visit http://MrKent.Net .

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Choosing A Conference Room Projector

Choosing A Conference Room Projector
By Jim Gelder

When it comes to choosing a conference room projector, you probably want to run and hide! Thats because most of us dont know much about projectors to begin with and dont know the first thing about how to select one thats appropriate for a conference roomor any room for that matter.

Thankfully, theres the Internet. Within minutes, you can have all the information on choosing a conference room projector that you could ever want.

Sorting through all that information, though, can seem overwhelming. So its good to have some questions in mind as you do the research necessary to find the perfect projector for your conference room.

Some questions you want to ask are:

How difficult is operating the projector?
Is the projector portable or will it need to have a permanent mounting? Which type fits my conference room needs best?
What types of presentations will the projector be used for?
How much does the projector cost?
Does that cost fit my for buying a new conference room projector?
Is there a service contract available for the projector?
What is the repair policy for the projector?
Is the company Im thinking of buying the projector from a reputable and reliable one?
Will the projector require any special maintenance or periodic service checks?
Are any special supplies needed for the projector?
Is the size appropriate for the conference room?
If its portable, how much does it weigh?
Should I rent, lease, or buy?
Is the quality of the brightness satisfactory for the size of my conference room?
Do I need to save the receipt so that I can take the purchase off on my taxes?

These are just a few questions to help you on your way to purchasing (or leasing) a conference room projector. Just remember that cost does not always indicate quality. You can buy a wildly expensive projector that is all wrong for your needs. The opposite is true too: you can get a great projector that fits your needs for a moderate, or even small, investment.

The trick is in researching projectors and taking the time to read some consumer reviews that are easily found on the web. Before you do anything, though, have a budget in mind and have some idea of what youll be using your projector for. This will help guide your research and make it go more quicklyand be much more effective to boot!

Jim Gelder is a contributing writer for http://www.projectorian.com a website dedicated to offering information about projectors, projector rentals and also features a listing of local projector rental companies

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Projector Screens

Projector Screens
By Jennifer Bailey

When there is a projection of a video or an image, the presence of a projector screen is inevitable. A projector screen is a specially made flat screen to be hung on the wall or erected vertically, where the image is reflected, so that the image size is enlarged. The surfaces of such screens are usually rough, and colored white.

There are a number of types of projector screens. They are home cinema projector screens, portable projector screens, manual projector screens, electric projector screens, fixed frame projector screens and also movie board home cinema projection screens.

Home cinema projector screens are the screens with the viewable screen central to the eye. Some of the products that are popular include: CinElpro Electric Projection Screens (230cm), Cinema Electrol Projection Screens (190cm), Diplomat Channel Fix Electric Screens (290cm) and Diplomat Channel Fix Manual Video and Screen Formats (290cm).

Portable projector screens are for temporary positioning or for occasional use. These screens are easy to carry to various places. Most of the screens are foldable and are usually carried in coils. Some of the products that are popular are: Fast fold (427cm), Leader Portable Floor Screens (177cm), Movielux Compact Portable Floor Screens (160cm), Picture King Standard and Video Format Tripod Screens (244cm), and Professional Tripod Screen (240cm).

Manual projector screens can be pulled down and recoiled back from the ceiling, or wall mounted. Some of the products are Proscreen Manual Wall Screens (280cm) and Slim Screen Manual Wall Screens (200cm).

Electric projector screens have motorized drop and retraction through the use of wired switches or remote controls.

Fixed frame projector screens are permanently fixed frame screens. Some of the products are Cinema Contour Professional Framed Projection Screens (488cm) and Designer CineFix Home Cinema Projection Screens (200cm).

Projector Screens provides detailed information on Projector Screens, Video Projector Screens, Home Theater Projector Screens, Electric Projector Screens and more. Projector Screens is affiliated with Large Format Flatbed Scanners.

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Should We Buy A Demo Projector Over A New Projector

Should We Buy A Demo Projector Over A New Projector
By Clifford Tan

After many years experimenting with and learning about home theaters, it is hard not to interject some personal experience into the subject matter sometimes. When I was a teenager, I was piecing together my first home theater projector. I had a state of the art front projector that took up fully two thirds of my bedroom. Intellivision was a modern marvel with 64bit video game technology. Only one thing was lacking, I was buying a new stereo to complete the home theater experience.

There was no way I could have afforded a brand new stereo, but I did, with some patience and searching, I found some demonstration models that were within my meager budget. I completed my first home theater system when I was about 16. Is the demo model still a viable option though? And will it work for home theater projectors in the same fashion?

A fair discount is often given to the purchaser of a demo model. This is done mostly due to the fact that the demo model has indeed been used to a certain extent. While this may not be an issue for some audio and visual equipment, it is necessary to look at the whole picture before deciding if this is the right way to purchase a home projector.

Obviously you must decide if the projector will fit your personal needs. What kind of media display does it offer? Will it be suitable for mounting in your home? Will the cables be included? Is there still any warranty left on the projection unit? Is the projection screen included with the projector? This last part can be especially important since you can be assured that the screen and the projector are fully compatible if the unit has been displayed in the store.

Once all these questions have been answered, even if they are all answered favorably, it is necessary to look at what may be considered the most important two factors to consider when looking at demo models.

The first question to ask is what is the discounted price? While this is usually around ten percent, frequently an otherwise demanding store may be open to negotiations. The second very important question is to get an idea of how much the projector has been run. By knowing this simple fact, you can ascertain roughly how much bulb life will still be in the headlamp.

While it may seem silly to haggle over a light bulb, projector lamps can be a very expensive replacement part, usually costing between a couple of hundred and five hundred dollars each. Is any discount in the price of the home theater projector going to be outweighed by the purchase of a new bulb in the next few months?

With some careful searching and a little patience, a demo model is an excellent and affordable opportunity for the home theater enthusiast, just be careful and remember not only what to look, but what the relevant questions are when you are shopping this way.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com.

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Ceiling Mount a Home Theater Front Projector Metalcraft Mounting System

Ceiling Mount a Home Theater Front Projector - Metalcraft Mounting System
By Kyle Kolbe

After I fainted from sticker shock at the pricing of the official Sanyo PLV-Z3 projector ceiling mount ($200), I found a much cheaper solution. For $36.95 I could buy a Metalcraft all metal adjustable ceiling mount off ebay.

Mounting a projector to my ceiling was easier than I thought. Heres how I did it.

Tools youll need:

* Philips Hand Screw Driver

* Circular Level

* EZ Anchor Stud Solvers

* Tape Measure

* Step Ladder

Size up the mounting hardware: The Metalcraft mounts ceiling plate is large measuring five by five inches square with six pre-drilled holes for ceiling screws. A post descends to the projector mount plate.

How I measured my room for optimum mount placement: Bisecting the width of the room, considering the airduct, and measuring eleven and a half feet from the front projector screens surface plus the half the length of the mounting plate, I placed the plate on the ceiling and marked each screw hole.

Anchored to ceiling: Wear safety goggles to avoid getting ceiling board dust in your eyes. I removed the plate and drove the metal EZ Anchor Stud Solver anchors until they were flush with the ceiling. The EZ Anchors are great because you never have to drill a pilot hole for the self-tapping anchors. I replaced the plate over the anchors and drove each #8 screw into its anchor. You may need an extra hand to hold the plate in place while you tighten the first two to four screws.

Attach the projector plate before attaching to ceiling plate: Since the mount assembly breaks into two parts, one attaching to the ceiling with a post that screws into the adjustment plate for the projector, you can screw and tighten the hex screws and plastic bushings to the projector body.

Secure the projector plate to the ceiling mount: The Metalcraft ceiling mounts post accepts a adjustable knob screw. You will need someone to help you get the screw started while they lift up the projector. With the screw tight you can rotate the projector from left to right on the ceiling post.

Fine-tuning: The Metalcraft mount allows yaw, pitch and rotation. With the hand tightening of knobs on the projector mount plate you can canter your projector perfectly on your projection screen. With the aid of a circular bubble level you can level the projector from front to back and left to right using the corresponding thumb knobs. With projector level you can then adjust your lense up and down and to the side for a perfect screen fill with no keystone distortion correction.

Caveat: The Metalcraft mount is wobbly because of the thinness of the metal used on the metal band that holds the projector mount to the ceiling mount post. When you need to change interconnects or adjust manual focus and zoom the projector rocks slightly as the metal gives. This does not cause the projector to fall out of register, though. Hey$36.95what do you expect?

The Metalcraft Mounting System for the Sanyo PLV-Z3 LCD projector (and many other projector brands and models) is a great bargain and very reliable. Highly recommended.

Father, Husband and Geek. My geeky interests have not changed since I was a kid. I still love comic books, anime, role-playing games, console video games, indie rock, imported toys and mecha models, bad American and great British sitcoms, and all the tech that lets me experience these hobbies to their fullest. Now that Im married with children, Ive had to strike a balance between supporting and pleasing my family and feeding my geekery hunger. Lucky for me, my wife is very accomodating and even geeks out with me on occasion (the ladies love Joss Whedons Firefly). My two year old likes anything that moves on the front projection screen and makes noise, so far she is easy to please. Geekwithfamily.com exists to enrich the lives of fellow geeks and the friends and family who put up with them.

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Buyers Guide to Home Theater Projectors

Buyers Guide to Home Theater Projectors
By Warren Thompson

Over the years, I have grown really attached to my home theater system. I must say, of all the rooms in the house, my own little movie theater is the one I could not live without. I am absolutely in love with my home theater system and, if you are anything like me, I am sure you will love yours too. I found, when I was initially building my system, that there was so much information to absorb. Every product out there seemed better than the next, and I found myself unsure about which to buy. Here are a few things to keep in mind when shopping for a new home theater projector.

There are two main types of projectors on the market; DLP and LCD. DLP stands for digital light processing. It was invented by Texas Instruments, and utilizes a microscopic array of over 2 million mirrors. DLP has a higher contrast than LCD, but there are some unfavorable consumer reports that note something called the ainbow effect. The ainbow effect is noticeable when looking from one side of the screen to the other, and is characterized by a sudden burst of color.

LCD stands for liquid crystal display. These projectors have three distinct glass LCD panels inside; one for each component of the video signal (red, green, and blue). While DLP chips reflect light, the LCD panels allow light to pass through them. LCD projectors produce brighter images, and they are known for having excellent color saturation. In the end, you will be hard-pressed to notice a great difference between the two types of projection systems.

When shopping for a new projector, keep your particular needs in the forefront of your thoughts. As I mentioned above, it is really easy to lose yourself in the minutiae of each particular system. Connectivity is a definitely something to be mindful of. Make sure that you are able to connect all of your components, including your gaming system. Nothing beats playing Halo in real-life size! Contract ratio is another important factor; the higher the ratio, the better the picture will be.

The brightness of your projector is another thing to consider. Light output is measured in ANSI (American National Standards Institute) lumens. You will want to avoid a projector that produces anything shy of 1000 lumens. As you are likely aware, the projection resolution is extremely important. This refers to the number of pixels that can be displayed on the screen. Go for something that is no less than 1024x768, as this will allow you to fully appreciate the depth and quality of HDTV. In the end, you should buy the projector that is in line with your needs and your budget. Soprano's is coming on right now! Time to go!

Warren Thompson is like a kid in a candy store, when it comes to home theater products. When he can drag himself away from his miniature movie theater, he writes for hometheaterfocus.com an excellent resource for information about soundproofing, digital video recorders, wiring diagrams and more.

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Home Theater Plasma TV VS Projectors

Home Theater - Plasma TV VS Projectors
By Jakob Culver

Many homeowners are struggling with an important, electronic question: What is the ideal display for my home theater? Many people have fought this debate, but I'll try to make clear some important considerations.

The most important detail to consider when deciding between a projector and a large plasma television is ambient light. A room with lots of windows presents a problem for a projector because every little bit of ambient lighting degrades the projected image. The ideal environment for a projector is one where you have total control over the lighting. If your home theater uses a projector, you are limited to using it when you can eliminate other light. A plasma screen can be used anyplace, anytime.

Assuming your home theater has blackout curtains, or exists deep underground; let's examine differences between a plasma television and a projector. One advantage of a projector is that you can get a much larger picture than is available in plasma. Projectors can produce images comparable to an 81-inch screen and larger. This just isn't possible with a plasma screen. However, plasma's have the advantage of not needing any amount of space. A projector must have a long enough corridor to project its image on the wall or screen. To get an 81-inch or greater image, you need a decent distance between the projector and the target. Second, a projector's image is dependent on more than the quality of the projector; you must be projecting onto a specialized surface or you lose detail. A top of the line HD projector with a very high native resolution would be wasted if you were just projecting the image onto a wall. You need an equally high quality screen with features such as a matte finish to eliminate reflection and glare. A plasma display requires no additional equipment.

Overall, a projector has the potential of creating a beautiful image, but it needs too much to work effectively. If you're creating a private movie theater with lighting control and an investment in a screen, mounting equipment, and blackout curtains, then a projector is your piece of equipment. For everyone else, I suggest a plasma television.

Jakob Culver is founder of the website http://www.plasmatvarena.com providing information, articles and reviews about plasma tv's. To find more articles like this one visit the site http://www.plasmatvarena.com.

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Build Your Own LCD Video Projector

Build Your Own LCD Video Projector
By Andrew Seltz

Mix big screen home theater dreams with a skimpy budget and you have the makings of a fantastic do-it-yourself project. Just think of how impressed all your friends will be watching blockbuster movies on a video projector you made with your own 2 hands.

It was just these motivations that landed me in front of my web browser digging for information for this project. There are a lot of cheesy websites that promise the moon and sell you a plastic magnifying lense and the instructions to stick a television into a box and put this lens on the front. You will get an image, but it will look like you made it yourself. - dark, and blurry.

Is there any way to make this work? The short answer is yes. A video projector is essentially a high resolution LCD video screen with a really bright light shining through it and a projector lense enlarging onto the screen. New portable models use very tiny, and expensive, LCDs along with sophisticated light sources and high quality lenses. If you are willing to end up with a projector that isn't quite so tiny, you can scavenge the parts you need from an LCD computer monitor and add some electronic components and relatively inexpensive lenses. For $200-$500 you should be able to create a high resolution bright projector that will really impress your friends.

The parts you need are:

• High resolution LCD computer monitor
• Projector lens (and possibly 2 fresnel lenses depending on the plans you use)
• Cooling fan(s) - bright lights get hot when you shove them in a box
• Bright lightsource (one approach to the project is to use an old overhead projector)
• Electrical power supply

There are dozens of websites with step-by-step plans for free or for sale. Some sell parts that you'll need. Two that I've found to be excellent are LumenLab and the DIY Projector Company. They both sell parts and parts kits. LumenLab sells a very nicely produced PDF instruction guide with detailed plans. DIY offers plans free, but expects that you'll buy one of their kits to actually make the projector. They both use the LCD in a box with a lamp approach.

InventGeek has a great article explaining the whole process in depth including the theory behind projectors. I recommend you check it out. The DenGuru website shows another approach to the project. They use an old overhead projector for both the lightsource and lens. You strip the LCD panel out of its frame and lay it on the projector like a transparency. Ugly, but it works! Check out their tutorial.

Break out your toolkit and get busy - and let's be safe out there people!

Andrew Seltz is a Go-To Guy! His wide range of interests and experiences have made him a walking search engine for his friends and colleagues. His passion for film and video production have made him particularly interested in Big Screen Televisions and Home Theaters. Visit his site: http://www.ColossalTV.com

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Some Things Your Projector Dealer Might Not Tell You

Some Things Your Projector Dealer Might Not Tell You
By Clifford Tan

A salesman is a salesman. He does not make a living if he does not sell something. So it may sometimes happen that a salesman or a dealer will not tell the buyer all of the relevant facts about a given product. We have tried to list enough of them here to give you a general idea of what to look for and what to ask.

Bulbs or the Headlamp
This is probably the one thing that gets overlooked more than anything else. The bulbs are an expensive part of the home theater system and need to be checked out carefully before purchasing a projection unit. What is the projected bulb life? How many lumens does it generate? These are specific questions that should generate specific answers that the projector dealer may not otherwise mention.

Contrast Ratios
Contrast ratios are something else that needs to be considered. The projector dealer may or may not know the statistics regarding a specific projector unit, but what about the ambient lighting in the room where the projector will be used. Is the light source constant or is it varied? Properly factoring in the light source in the room where the theater projector will be set up is not something that many dealers or salesmen will volunteer to do for the buyer.

Screen
The screen is also an important part of the whole home theater experience. Which screens work best with which types of projectors is likely something the salesman or dealer is not going to know and will not tell you without prodding. Having the information beforehand can save a lot of time and grief when shopping for a home theater projector.

Mounting
What types of mounts are included with the projector is something they may or may not refer to at the projector dealer, but what else is there to consider with mounts? Is the projection unit prone to overheating when mounted on a shelf mount? Is it compatible and able to be mounted in the proper place for the distances in the room where it will be used? Another factor in regards to the mounting of the multimedia projector is the hazard of creating a keystone effect by mounting the projector incorrectly or off center. What kind of variance do the optic lenses on the projector provide to prevent this? Is there only a vertical adjustment or does it have both horizontal and vertical optic controls? Does it only have the keystone adjustments or does it provide digital adjustment as well? Mounting the multimedia projector properly is a key factor in being able to properly enjoy a high quality picture with the home theater projection unit.

Is this the right projector for me?
Is the projector really compatible for the uses that are needed or is the salesman or dealer just trying to push a product off on the consumer? Knowing which projectors are better for what types of displays is something that the dealer may not even know about. Different home theater projectors have different uses. Some work better with movies, videos and video games, and some work better for still-multimedia presentations. Being knowledgeable about which projector does what can save a lot of hassling with the uninformed salesman or the dealer who just wants to move projectors out of his store.

To be forewarned is to be forearmed. No matter how well prepared the salesman is or how honest the projector dealer is, they have many different products that they have to know a lot about. Even the salesman with the best intentions will not know everything about all of the home theater projectors available. There are many things the projector dealer will not tell you.

Note: This article may be republish for use in websites as long as the author bio and active hyperlinks are kept intact.

Clifford Tan, a Home Theater enthusiast and owner of the website Home Projector Advisor offering projector reviews, advice and many useful tips and hints to business and home consumers looking to purchase a home projectors. To find out alot more information about home projection system, visit the site http://www.home-projector-advisor.com

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Tips on Comparing Prices on Projectors

Tips on Comparing Prices on Projectors
By Jim Gelder

Buying a projector is an investment that you want to be sure you make wisely. So taking the time to do some comparison shopping when it comes to prices is simply a smart thing to do and something you certainly wont regret.

There are several ways you can go about comparing prices on projectors. The first is to visit electronics stores and office supply stores that sell projectors and check out their prices in the stores. This is an especially good method during sales. Its also a great way to get a good deal locally because many stores will offer to beat their competitors best price by a certain percentage, which can save you even more money.

You can also research and compare prices on projectors online. Doing your projector price comparison shopping online makes it possible for you to check out a much larger number of prices on projectors than you can do by going from store to store. This will also make it possible for you to check out the prices on a wider number of brand name projectors and even look into the prices of used projectors. Online auction sites such as eBay are great places to compare prices on used projectors.

Consumer report magazines are also a good resource for comparing prices on various projectors. These reports have the advantage of also rating the projectors, so you can compare quality as well as prices on projectors.

This is an important part of comparing prices on anything, whether its projectors or cars. You want to get the most value for your money, and that means that many times a medium priced item is actually a better value than a higher priced one because it has more features than a stripped down top brand name one has.

Also, even before you start comparing prices on projectors, its a good idea to have a budget in mind for what youre willing to spend for your projector. This will help you focus your price comparison, although you dont want to rule out looking into projectors that may cost more than youve budgeted for because you may run into an unexpected bargain as you do your research.

And if the thought of doing all the research needed to compare prices on projectors sounds like work to you, remember that at least half the fun of making any purchase is in the search! Make a game of it and see just how great a projector you can find for the least amount of money, thanks to your savvy comparison shopping. Then take those savings and splurge on something just for you!

Jim Gelder is a contributing writer for projectorian.com a website dedicated to offering information about projectors and projector rentals and also features a listing of local companies that offer LCD projector rentals, New York projector rentals and more.

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Understanding Native Resolution For Your Home Theater Projector

Understanding Native Resolution For Your Home Theater Projector
By Semore Bernstein

What is Native Resolution for your Home Theater Projector?

To understand what is native resolution, lets start with an understanding of the concept of 'resolution'. Resolution is concerned with the mapping of the information within a picture or image by the dot area.

The smaller the dots, and the more densely packed it is, the greater the resolution, since the mapping of dots as measured in pixels constitutes the data for reproducing the images in video outputs of home theater and other viewing systems. This data processing capability of the projector, as measured in pixels, is what constitutes native resolution.

For high definition home theater projector pictures with good resolution, both the native resolution of the projector should match the resolution of the video signal or video input, failing which, distortion of the images is likely. Native resolution of home theater projectors is measured in two dimension figures with current capabilities ranging from (640480, 800600, 1024768, 16001200) for 4:3 image aspect ratios and the occasional odd resolutions like 12801024.

Thus, if projectors of 1280X 1024 native resolution were to map a video signal of resolution 1024 X 768, there would errors and likely distortion in the image. To effectively combat or otherwise provide for different standards, most home theater video projectors come with capabilities of multiple resolution standards, though it is most likely to be multiples of the lower resolution values.

Advice on Home Theater Projectors
Advice on Home Theater Projector Displays
Advice on Home Theater Projector Mounts

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DVD Projector Rentals

DVD Projector Rentals
By Marcus Peterson

DVD is a type of optical storage technology. Digital form of storage has completely replaced magnetic storage media like floppy disks. DVD is the acronym of Digital Versatile Disk and is better than CD in terms of audio and video quality. It is versatile and can be played in DVD players and computers.

DVD comes in various formats like DVD-R and DVD-RW, the R and W means read and write capacity of the disc. DVD players can play units can play a various units audio and video discs in different formats such as CD-R, CD-RW, mp3 and VCD. DVD players also support jpeg formats. Some DVD players have recording features.

DVD projectors are used to project audio and video images from DVD players and VCR. Care should be taken to ensure that the medium used is compatible with the DVD projectors. For instance, some DVD projectors dont support inputs from computers. While hiring DVD projectors, the accessories are DVD players, DVDs, sound systems and screens. These have to be carefully chosen. They also come with IR remote controls and laser pointers. The output can be fed into high resolution plasma and LCD displays.

Some of the branded names available for rental come from 3M, Canon, BenQ and InFocus. They are available in different models with different features. DVD projectors can be hired for as low as $80 and the accessories are charged with their own rental rates. The rental companies require credit card information and an ID. Since DVD projection is of high quality, the major segment is the corporate and business houses for their presentation requirements.

DVD projectors, because of their versatility and high quality, are used in wedding receptions and other staging events such as conferences and trade shows. DVD projectors have made the film projectors less attractive.

Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

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Looking For A Cheap LCD Projector TV?

Looking For A Cheap LCD Projector TV?
By Zach Parker

Knowing what brightness and contrast ratios are best for your lcd projecting needs is probably going a bit too far, but it will definitely help if you do. Used lcd projectors may be a wonderful investment; just because they have been viewed by someone else does not mean it is in poor condition. Lcd projectors are prone to the screen door effect which means certain images may appear as if being viewed through mesh or fine screen. Choosing the lcd projector that is versatile, reliable, and portable may be a tall order to fill if you don't know alot about projectors. In contrast to some of the other lamps in lcd projectors, halogen lamps burn at a steady rate and have a consistent brightness throughout the lamp life. Knowing what is necessary in your lcd projector and how often those features will be needed can help you decide which one is right for the job.

Lamp life for metal halide bulbs in lcd projectors normally range from 750 to 4,000 hours or more depending on how it is used. A review of the upcoming digital projectors is really exciting due to new technologies constantly being developed for the industry. Lcd projectors are versatile, reliable, and portable; this is why they have become really popular over time; they can be transported anywhere. These projectors deliver a better picture than the lcd television sets that are found in most modern homes. Used lcd projectors purchased on ebay normally have a picture on the bidding page; this might allow you to determine the condition before you make the purchase.

These lcd projectors have a variety of functions for high picture quality and network compatibility is also included. Just about all projectors use the same kinds of bulbs for illumination; most people are shocked to find out that the bulb used is not that expensive. When dealing with lcd projectors you might find that it will provide several incredible viewing opportunities for you and other guest viewers. When dealing a lcd projector for the first time; make sure you read the step by step instructions on how to operate the equipment.

A digital lcd projector of the present has an lcd approximately the size of a small color slide and works similar to traditional slide projectors. Lcd projector rentals require the user to know what size of the audience, viewing angle, viewing distance, room brightness, and location it will be used. Lcd projector rentals are a big business for those that only need to project for presentations or events on a sporadic basis for home or business.

Still looking for a cheap LCD projector TV ? Try visiting LCD-Projector-Sales.info, a website that specalizes in providing LCD projector rating advice, tips,resources and information on how to find a LCD projector online!

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Understanding Projector Screens: Be Careful You May End Up With TOO Bright An Image!

Understanding Projector Screens: Be Careful, You May End Up With TOO Bright An Image!
By Andrew Ghigo

Today's compact yet powerful front video projectors may leave you with a too bright an image to watch! This being especially so if you intend to watch a projected image in a darkened room which after all, is most often the case with a home theater setup.

Defining Screen Gain

Prior to proceeding with our discussion, it is important that one has a full understanding of what the term screen gain is all about.

It may sound strange that we talk about gain when in reality a projector screen is nothing more than a passive device. Yet there is - it is all a question of how the screen surface distributes the reflected light.

Screen gain is a measurement of the reflectivity of the screen surface. It measures the ability of the screen to direct incident light back to the audience.

The gain number represents the ratio between incident light and reflected light. A flat matte white surface has a gain of approximately 1. A gray screen has a gain less than 1 and therefore, it attenuates incident light. Reflective screen surfaces have gains greater than 1; these projection screens direct more incident light back to the audience.

Gain is always measured in front and perpendicular to the screen at the point of maximum brightness; this represents peak screen gain and occurs at the zero viewing angle perpendicular to the screen surface.

For a screen with gain greater than one, the gain drops as one moves to the side and view the screen at an angle to the perpendicular drawn from the center of the screen. The angle at which screen gain falls to half the peak is referred to as half gain viewing angle. A person viewing the screen from this angle will see the image half as bright as the person seated at the center. The more one moves further away from the center, the dimmer the projected image will be.

The higher the peak screen gain, the narrower the supported viewing angle. This is the price one has to pay for a higher screen gain - the higher projector screen gain at the center is in fact achieved by directing more light towards the center viewing positions rather than allowing for a uniform reflected light over a wider angle of view.

Projected Image Brightness:

Matching the projection screen gain with the ambient light and the video projector output is essential if you want to ensure that you will end up with a correct level of projected image brightness.

This is an extremely important issue. Do not forget that a basic requirement for a great movie experience is a comfortable environment. This means that the time one spends watching a movie should be as comfortable as possible. Exposure to a bright projected image is uncomfortable on the eyes - even when this is for just a few minutes, least imagine when watching a two-hour movie.

A Tricky Matching Process!

Ambient Light Conditions, Image Brightness & Screen Gain

A projected image is at its best when viewed in total darkness - this helps take away any visual distractions - rendering it easier for the viewer to get deeper immersed into the movie action.

In the home, achieving a completely darkened room is almost impossible except in the case of the dedicated home theater setup. The amount of ambient light present has an impact on the resultant projected image contrast. This calls for the need to increase the image brightness to maintain the correct level of image contrast.

The tricky issue is to arrive at the correct level of image brightness for a pre-set level of ambient light. This in view that projected image brightness is a function not only of the projector output, but also of the screen gain, and image size.

The explanation that follows should help you get a better understanding of the relationship that exists between these three inter-related parameters.

Display Brightness and Screen Gain

The brightness output level of your projector is a measure of the projector output power in terms of light intensity. Please keep in mind however that the resultant projected image brightness is a different issue. Image brightness falls in proportion to the area of the projected image size - the bigger the projected image is, the dimmer it will look for a fixed level of projector brightness.

The projected image brightness - more specifically the Luminance level for a projected image, is a measure of the light reflected from the projector screen area. It is measured in foot-Lamberts, and is defined as:

ANSI-lumens of your projector divided by the square footage of Screen.

(Note that one foot-Lambert is equal to 1 ANSI lumen per square foot.)

To arrive at the actual level of light reflected from the screen surface, the above result must be multiplied by the projector screen gain.

A useful reference here is what has been defined as 'sufficient brightness' by the Society of Motion Pictures and Television Engineers, also known as SMPTE.

In standard 196M, the SMPTE determined sufficient brightness for showing motion pictures in a darkened room using a unity gain matte white projector screen, as 12 - 22 foot-Lamberts. In practice, the luminance target level is set to about 16 foot-Lamberts, while the average bright scene brightness level in a movie theater is typically 60% to 75% of this target value.

Display brightness is in itself an entirely subjective term; whats more, it is all relative to the amount of ambient light falling on the screen surface.

The following rules of thumb would surely come to assistance in this respect:

The contrast ratio between the projected image and the ambient light level falling on the screen should be at least 5:1. This is necessary for the eye to perceive a real impression of brightness. If this contrast ratio is not achieved, the projected image will not be considered of adequate brightness level.

When viewing takes place under normal ambient light conditions, the luminance level should be close to 50 foot-Lamberts. This level of luminance is derived from the fact that SMPTE indicated a target level of image brightness for a CRT TV as 50 foot-Lamberts, this in view that a TV is normally viewed under normal ambient light. One may argue that TV is a totally different technology this is true, but this target level for image brightness or luminance, still holds good for most circumstances.

How does all this translate in practical terms?

If one is viewing an image in typical very low ambient light conditions (say less than 2 foot-candles - equivalent to approximately 22 Lux), then the minimum required light level illuminating the screen surface should be around 10 foot-candles to achieve sufficient image contrast.

For a matte white projector screen surface with a screen gain of one, this translates to a minimum of 10 foot-Lamberts in terms of light reflected from the screen for image brightness. This is close to the SMPTE typical requirement for average luminance when viewing pictures in a darkened room.

Similarly, if viewing were to take place under normal ambient light room conditions (typically 10 foot-candles or 110 Lux), applying our first rule of thumb to achieve the required contrast level would result in a luminance level of 50 foot-Lamberts (approx. 540 Lux) for the same matte white projector screen surface. This is also in line with the target luminance level detailed in rule 2 for viewing under normal ambient light conditions.

Note:

• Light illuminating a surface is measured in lux (Lx = lumens/m2), or foot-candles.
• Light reflected from an area (luminance) is measured in candelas/m2 (cd/m2) or foot-lamberts (fL).

Now, lets consider as an example what will happen with different projector screen gains for say a given 1000 ANSI-Lumens projector and a 100 diagonal screen size.

Projector Screen Gain 1 1.5 2Image Luminance in foot-Lamberts304560

It is clear that our 1000 ANSI-Lumens projector would produce a too bright an image when the latter is viewed in a darkened room, even when using a standard matte white projector screen with unity gain. Similarly, use of this projector in conjunction with a projector screen surface having a gain of 2 may result in a too bright an image even when viewing takes place under normal ambient light conditions.

Andrew Ghigo A Telecoms/Electronics engineer by profession, with specialization in digital switching and telecoms fraud management systems.

Editor and publisher of http://www.practical-home-theater-guide.com - a site dedicated to all home theater enthusiasts with the scope of serving as a comprehensive home theater guide to home theater systems, product reviews and home theater design.

This article is an excerpt from a series of guides appearing under thehome theater screens section of the site.

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Benefits of a HighQuality LCD Projector Lamp for Your LCD

Benefits of a High-Quality LCD Projector Lamp for Your LCD
By Enreek Kahlon

In terms of multimedia presentations, LCD projectors have proven to provide impressive image quality and high resolutions. However, if your projector suddenly fails to work and you need to present a proposal with potential clients, it could cause your business to lose money, or worse, it could cause your job.

The most common problem of projectors is the sudden burn out of LCD projector lamps. Fortunately, these LCD projector lamps can be easily replaced. Although anyone can replace the lamps for your LCD projector, choosing the lamp can be an overwhelming task. You need to ensure that the type of lamp you buy is compatible with your projector.

A high-quality LCD projector lamp should be able to operate for over 4,000 hours. However, the measurements of lamp life are not reliable because the lamp can still work, even if it becomes dimmer. For this reason, you need to check the peak lamp life listed in most manufacturers of LCD projector lamps, which provides users with information of the total brightness a particular lamp could provide.

Choosing a high-quality lamp for your LCD projector should be your first concern, instead of price. Compared to the affordable halogen lamps that last about 70 hours, metal halide lamps can work up to 500 hours. Meaning, the more expensive LCD projector lamp you choose, the longer-lasting life it would provide.

How to Choose an LCD Projector Lamp

There are only two types of lamps used in LCD projectors metal halide and tungsten halogen. In order to choose a quality lamp, you have to understand how each one works.

A metal-halide lamp provides better brightness, but lower consumption of power. Be aware that lamp wattages do not reflect the brightness. Metal-halide LCD projector lamps are more efficient because it could provide your projector with a very white light until the end of its life.

On the other hand, tungsten-halogen lamps produce whiter lights because it runs at a higher temperature than other lamps. Although the white light will become yellow during its lifetime, it provides a longer lamp life because of its low-pressure and high temperature features.

Although metal-halide LCD projector lamps are more expensive, they could provide over 2,000 hours compared to the tungsten-halogen lamps 70 hours of operation. Be aware that lamps of your projectors could last longer when you operate them in economy mode, which automatically cools down when the projector becomes idle.

How to get the best LCD Displays, TVS, computer monitors and more. This is must read before you decide to buy... LCDs and LCD Displays, at http://www.dreamtekk.com

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LCD Projectors for Sale

LCD Projectors for Sale
By Ken Marlborough

Do you want to continue to be at the cutting edge of technology with high-end presentation products? Do you want to keep your audience glued to you and the vibrant graphics and clear characters of your presentation? Whether you are presenting to 10 or 10,000 people, there is bound to be an LCD projector that is perfect for you. Here is a simple guide on what to look for when you want to purchase one.

Resolution

The first consideration to look for when shopping for an LCD projector is resolution. Resolution is the number of light dots (called pixels) per square inch of the image produced. The higher the number of the pixels, the clearer and tighter your image will be. Also, if your LCD projector of choice is high in resolution, the image you can broadcast can be expanded to greater degrees. If your lecture or presentation is heavy on graphics and high quality color, or if you need to present to a large crowd, then you will need an LCD projector with high resolution.

Brightness

Since the image your LCD projector will broadcast is projected with a high-powered light bulb, you will also want to consider how bright a projection you will need. Again, the brighter the image you project, the farther away it can be seen. This is an important consideration for people thinking of presenting to large and small groups.

Price and other considerations

These projectors do not come cheap, so price is a major consideration. If your company is small, a desktop projector with resolution the size of your typical computer monitor should suffice. Also, be sure to check on compatibility issues. Is the projector you want compatible with your hardware? If it is not, you may wind up with a very expensive lamp. Finally, ask about user support. Does it come with a warranty? If it does, how long is the coverage? Is there a technical support hotline you can call if you have trouble with your projector? All these things will factor into getting an LCD projector that suits your needs.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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Used LCD Projectors

Used LCD Projectors
By Ken Marlborough

Apart from the usual used LCD projectors, those which have been used from some considerable amount of time by someone and are now for sale, there are some other categories of used LCD Projectors.

One of these categories is called demo projectors - projectors that have been used sparingly in-house for customer demonstrations. The majority of demo projectors generally have 90% or more of the original lamp life remaining at the time of resale. Demo models that are still in production ship with a full manufacturer's warranty. The length of warranty varies on demo models that are no longer in production.

Another category is refurbished projectors - projectors are most often the source of best projector deals. These projectors have been returned to an authorized factory service center and restored to meet manufacturer's original quality standards. Refurbished projectors feature new lamps, yet the warranty varies by manufacturer.

Yet another category is bargain buys - projectors that are new, factory-sealed units and are priced less than US $1500. These projectors are typically SVGA resolution, are portable, and feature an adequate amount of brightness for most any environment. Because of their budget price, the length of warranty on these projectors varies.

There are several Web sites that sell used LCD Projectors over the Internet. However, when buying over the Internet, one should not only look at the security of the mode of payment, but also about the vendor who is selling the product on the Web site. Generally, some people who have bought a product from a vendor leave a comment about the quality of service and product sold by the vendor; these comments are often very helpful in eliminating the vendors with a poor track record.

Finding a used LCD Projector is not difficult, what is though, is narrowing down to decide on a projector that meets the requirements, comes from a vendor who can be relied upon, and is at available at the best price among all the Web sites on the Internet that sell used LCD projectors.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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Home Theater Video Projectors

Home Theater Video Projectors
By Jason Gluckman

A home theater enables us to view films in the comfortable ambience of our homes. The unique ambience of movie halls can be recreated completely, minus the crowds, and favorite movies can be watched with friends and relatives in comfort. Home theater video projectors are the main component around which the home theater system runs.

At present, there are three kinds of video projector technology in use. They are CRT, LCD, and DLP. Apart from these, there are certain modifications also available based on the technology used for the above three.

During the early years of video projectors, television expertise was centered on Cathode Ray Tube technology, or CRT. Cathode ray tubes are used for the generation of a television image. Three small CRTs with a single unit meant for every principal color, and a light-magnifying lens, helps in the projection of a color representation against a big screen in a dimly lit room. A CRT projector is capable of creating superior high-resolution images. This can be achieved with the help of the right combination of video processing circuitry, CRT size, and lens combination.

The second sort of video projector is the LCD projector, or Liquid Crystal Display. This is different from a CRT projector in the sense that it is not based on the conventional projection tube. An LCD projector primarily operates by delivering a strong light source through a transparent LCD chip comprising of individual pixels, which exhibits the moving video image. This image is subsequently projected through a lens to a big screen.

The rapid developing sort of video projector with respect to sales is the DLP, or Digital Light Processing projector. This type of projector is very similar to the LCD as in this also the real image is exhibited on a chip.

Home Theater Projectors provides detailed information on Home Theater Video Projectors, Home Theater LCD Projectors, Home Theater Projector Packages, Home Theater Front Projectors and more. Home Theater Projectors is affiliated with Curtains For Home Theater Screens.

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Computer Projector Rentals

Computer Projector Rentals
By Eric Morris

Computer projectors have become indispensable for company presentations. The audio-visual impact alone really drives a difficult point home.

Most computer renting companies also provide computer projectors. However renting a computer projector can be complex as projectors are custom-designed for different operating systems and even processors. Before renting, a company will ask what computer will be used: iMac computers use different types of projectors than IBM. The resolution and the video card of the computer also matter in the final output on the projector.

Another factor is the room size and lighting. Rooms that cannot be darkened would preferably need a LCD screen. LCD screen would also Plasma monitors would suffice if the assembly will be small. The size of the monitor would also depend on the size of the room and how far the people are going to sit from the display. Sound quality is also affected by the size of the room.

Before renting a projector, inform the renting company whether videos are to be shown or just slides and transparencies.

Computer projector renting companies usually setup the entire audio-visual equipment when a rental order is placed. Get the whole thing checked, for video and sound quality. Also try out the projector before hand, especially if there are laptops to be used. The renting company also undertakes the dismantling of the unit after the program is completed.

Renting companies allow their projectors to travel with the business if necessary. For portable projectors, insist on a case to pack the equipment. Also the projector itself should be lightweight, not weighing more than 10 pounds.

Costs of renting computer projectors are tax deductible if they are used for business. Companies may pay for them using checks or their company credit card.

Computer Rentals provides detailed information about computer rentals, laptop computer rentals, computer projector rentals, desktop computer rentals and more. Computer Rentals is the sister site of Nature Screensavers.

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Auditorium LCD Projectors

Auditorium LCD Projectors
By Ken Marlborough

Auditorium LCD Projectors are generally up to 40kg in weight, with 3,000 lumens (a measure of brightness) and above, have SVGA (brightness range from 1700 - 2000 lumens) or XGA (brightness range from 2000 - 3000 lumens, are more expensive than SVGA) native resolution. Auditorium projectors are mostly LCD projectors and usually come with a ceiling or rear mount facility. They usually have motorized zoom lens, are generally operated via remote control and offer multiple input and output ports for both PC and video. Auditorium LCD Projectors generally require external speakers and are targeted at spacious venues like theaters, auditoriums and convention halls.

In other words, auditorium LCD projectors are heavy duty, and super bright, allowing them to provide the added illumination for very large applications. These projectors deliver high brightness that can be used in a wide range of places. They generally come with a lens shift function and a wide range of optional, interchangeable lenses also contributes to installation ease. These LCD Projectors have a variety of functions for high picture quality and network compatibility is also included. Providing realistic colors, sharp contrast, and super bright images, they enable presentations with persuasive impact in a variety of situations.

Some factors which help in choosing a better Auditorium LCD Projector are: Lumens, Resolution, Lens Power, Keystone Correction, Scanning Frequency, Contrast, Lens Throw Ratio, Aspect Ratio, Image Offset Range, Computer Compatibility, Video Compatibility, Image and Mouse control, Projection Modes, Color Reproduction and Lamp Life.

These projectors generally have a specially designed auto focus lens, which allows for quick and easy switching between multiple screens with minimal user adjustments. Their automatic color correction feature provides true color reproduction even when projecting onto colored or textured walls for a perfect presentation anywhere. Some of them have a 3-D Reform technology, which lets one set up the projector virtually anywhere in the room and still get an aligned image.

While choosing the right LCD projector for an auditorium, the dimensions of the auditorium, the ambient light conditions and the distance where the projector will be placed from the screen should considered and projectors whose specifications exceed the requirements should be considered.

LCD Projectors provides detailed information on LCD Projectors, LCD Projector Rentals, LCD Projector Lamps, LCD Video Projectors and more. LCD Projectors is affiliated with Cheap LCD TVs.

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An Introduction To LCD Projectors

An Introduction To LCD Projectors
By Elizabeth Morgan

A projector is an apparatus for presenting an enlarged image on a screen from a transparency such as a photographic slide or a film. In a motion picture projector, each frame is held stationary at an illuminated aperture for a brief period, and then advanced by an intermittent sprocket or reciprocating claw, the light being cut off by a rotating shutter during the movement. The sound track on the film is reproduced at a separate sound head where the film is moved continuously at a constant speed.

LCD projectors come with the capacity to deliver high-definition pictures with high pixel density. Most of the LCD projectors are compact and lightweight; most of the advanced LCD projectors even use two-inch poly silicon panels. These panels (an advanced LCD projector might have TFT panels) help to produce high-quality images with a high-definition quality of about 1,000 scanning lines.

Most of the ordinary and average LCD screens have a screen ratio of 4:3. However, in some cases, an LCD might also have a screen ratio of 16:9. Images are projected on to a super-large screen. Some of the salient features of a compact, lightweight LCD projector are:

1. The utilization of three high-definition two-inch poly silicon TFT LCD

panels are key elements in the production of the three RGB basic colors.

2. Images of high ratio contrast are produced. Usually the image contrast is 400:1.

3. A good LCD projector adds to the normal brightness by about 40% over most other conventional and ordinary LCD video projectors. These LCD projectors use a high-transparency LCD panel for the above purpose.

For example, one of the recent high-quality LCD projectors is the Fujitsu LPF-D711 high-definition LCD projector for home theater.

Projectors provides detailed information on Projectors, LCD Projectors, DLP Projectors, Video Projectors and more. Projectors is affiliated with DVD Projector Rentals.

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Using a Digital Projector

Using a Digital Projector
By Luke Kent

Many schools have one or several digital projectors available for educators to use. Many people are worried that making slideshows and setting up the equipment will take too much effort andtime. On the contrary, the use of digital projectors saves timeand can take minimal effort.

Most digital projectors take no time to set-up. Have someone show you how to set-up the projector a few times and then try ityourself several times until you are comfortable setting up the projector on your own. Each projector and computer have theirown little quirks so having someone who is familiar with the system will prevent running into trouble in the future.

Creating slide shows for your lessons may take a little effort inthe beginning, however, once these lessons are created they will be saved for you to reuse or to tweak. There are also websites like http://MrKent.Net that provide subject specific slide shows for you to change or use as you please.

The only way to find out if using a digital projector is for youis to give it a try. Create or download a short lesson and present it to your students to compare it to your regular lessonFormat. One thing you will notice right away is that you spend more time interacting with your class and less time writing and erasing items on the board.

Mr. L. Kent is an experienced educator and president of MrKent.Net - Education Technology Made Simple.

For more educational techology tips and reviews please visit us at http://www.mrkent.net/ - Education Techology Made Simple.

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Choose the Correct Home Theater Projector

Choose the Correct Home Theater Projector
By Steve Faber

How to Pick the Correct Projector for Your Home Theater

You're finally making the jump to the holy grail of home theater video displays; the front projection system. There's nothing else that delivers that really big, impressive video image like a front projection system. It's how you get that real cinema experience in your home theater. Home theater projector prices have plummeted in recent years, and the size of the units have shrunk right along with the prices. No more do have to live with a coffin sized box on your ceiling. As sizes have decreased, the image quality and brightness have actually improved dramatically. You'll notice image quality and brightness are two separate issues.

How do choose the correct home theater projector for your application from the myriad of projectors on the market today? There are so many different units, each with their strengths and weaknesses. First of all, there are two main projection technology categories, analog and digital. Analog projectors are based on CRTs, a mature technology that's been around for decades. Those are the projectors with the separate red, green and blue picture tubes and three lenses on the front. The other projectors use one of the newer digital technologies. These projectors have a single lens on the front. There are three major types of digital projectors on the market today; LCD (Liquid Crystal Display), DLP (Digital Light Processing) and LCOS (Liquid Crystal On Silicon). Each type of digital projector has it's advantages too.

You need to evaluate your specific requirements in order to make the proper decision. First of all, look at the room. Is it a dedicated home theater or a multi use room? Do you have complete control of the light? What aesthetic concerns are you dealing with? What is your projector budget? How large of an image do you want? Do you watch primarily DVD movies, TV movies, sports, or other TV programming? What specific source components will you be using with your projector now or in the future? Is picture quality the most important thing, or are other concerns, such as noise, size or brightness more important? Are you installing the projector yourself, or are you hiring a custom installer to do the installation for you? Where must the projector be placed? Can you get the required video and control cables to that location? These questions must be answered to ensure you get the proper projector for your home theater. If you are using a custom installer, they will take into account these factors and specify the appropriate unit for you.

Dramatic improvements in the picture quality of digital projectors notwithstanding, CRT projectors still deliver the most film like image. They have no pixel structure and deliver rich, deep blacks. Properly set up and calibrated, with a good video processor, and with the proper size screen, a CRT projector will deliver simply stunning picture quality. You'll need to use a good quality projection screen, typically with 1.3 2.5 gain depending upon the size, viewing angel and ambient light in the room. Prices on really great CRT projectors have fallen like a rock in the last year or two. You can get a 9 CRT projector that used to cost $35,000 to $50,000, for less than a third of that figure now. Many firms no longer make CRT projectors due to the decreased demand for projectors using this technology. In addition, the required video processors have decreased dramatically as well. Ten years ago a great video processor used to cost $10,000 to $20,000. Now you can get one for well under $5,000 and as little as $2,000, brand new. They also easily last 8,000 10,000 hours when properly set up.

If they are so fantastic, why doesn't everybody still use CRT projectors? Well, there are many detriments to a CRT projector as well. The best ones, with the 9 tubes, are simply huge. It's like hanging an upside down bathtub on your ceiling. If you want to put one under a coffee table, it'll be one large table. They are also very heavy, around 150 200lbs, so you need the proper structure to support them. CRT projectors also require precise placement. They must be perfectly square with the screen, at the correct elevation for good picture quality. In addition, while many digital projectors have zoom lenses, allowing the projector to be placed at a range of distance from the screen, CRT projectors must be at a very precise distance for a specific screen size. These factors severely limit placement options. While the larger CRT projectors put out more light than their smaller counterparts, they have pretty dim images compared to even the least expensive digital projectors. Finally, CRT projectors require specialized setup in order to get a watchable, much less an optimum image. Every 6 months to a year, they must be re-calibrated to ensure you are still getting optimum picture quality.

There are some very good reasons why most people are using digital projectors in their home theaters today. Many are small and light, require minimal setup and calibration (compared to a CRT), are quiet and have a bright, sharp image. But, there are many different digital projectors, ranging in price from around $700.00 to over $100,000.00. Which one is the best for your specific application? Thankfully, the situation is changing, but many of the digital projectors marketed for home theater use are really just re-badged presentation units. Presentation projectors sacrifice good video quality for brightness. Brightness is much more important when giving a Powerpoint presentation in a lit room than the correct color palate or the black level. The red on the pie chart looks great, no matter what, as long as you can see it from the back row.

You want to choose one of the newer units that has been truly designed for home theater applications. The actual technology used for the imaging chip is not all that important, there are great examples using all three of the digital technologies. Companies such as Sony, Runco, InFocus, Vidikron, Marantz, Benq, Panasonic, Sharp, Optima and Sanyo and some others all make great home theater projectors. The projector will have great black levels, to accurately reproduce detail in the darker areas of the picture and give great contrast. Absolute brightness is not extremely important, unless you have a multi-use room without complete light control or you have a lot of people over for sporting events. If you are entertaining many people for sports, it's nice to have some light on in the room, so a brighter projector is advantageous.

Projectors come in a number of different resolutions. The lower the resolution, the smaller the screen you can use before you can see pixel structure. Also, the lower resolutions will not support true HDTV. Most will display HD, but at a decreased resolution. The lowest end projectors typically have resolutions of 800 x 600. The Texas Instruments Matterhorn chip is popular on budget priced wide screen projectors, and has a resolution of 1024 x 576. Anything over a resolution of 720 will allow for true HDTV. The TI series of HD-2 DLP chips has a resolution of 1280 x 720. In April of 2005, TI announced new DLP chips with 1920 x 1080 was ready for production, allowing for true 1080p resolutions. Projectors with this chip will begin shipping in Q1 of 2006. Blu-Ray Disc has stated they will support 1080p, so by late 2006 there will be commercially available 1080p content besides Microsoft's WMHD discs.

Another very important aspect of home theater projectors is the internal video processing. This is one of the primary differences between good home theater projectors and presentation projectors. Digital projectors must display progressive scan images at the native resolution of the chip, so any interlaced signal, such as 1080i HDTV, must be de-interlaced and then scaled to the native chip resolution. Poor quality video processors, weather in the projector or external units, cause all sorts of video artifacts that can get in the way of a satisfying video presentation. This subject alone is too in depth for this article, as entire texts have been written on the subject. However, one common video artifact is jaggies where diagonal lines are jagged instead of straight. Another annoying artifact caused by poor video processing is moire'. This is a pattern seen as alternating light and dark lines that change position as the image moves.

You'll want to be sure your projector supports the HDMI or DVI with HDCP copy protection to allow you to connect a HD-DVD, scaling DVD player or Blu-Ray Disc player. These devices will only allow maximum resolution on a display that has a digital video input with HDCP copy protection. In the future, cable TV and satellite providers may restrict the maximum resolution to their digital outputs too.

When choosing your new home theater projector, make sure it has the video quality, brightness, size, auditory and budget characteristics that you need. Projectors are a large investment, choose carefully and you will be rewarded with years of thrilling video in your home theater.

Steve has 15 yrs in custom electronics. He is a CEDIA certified designer with ISF and THX certificates. His experience includes: installer and programmer; system designer; business unit director for an a/v importer; sales rep for a CE distributor; and principal of a $1.5M+ CEDIA firm. He's now senior sales engineer for Digital Cinema Design in Redmond, WA. Get more great home theater and home automation information here:Home Theater Projectors

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How to Fix a Broken Slide Projector

How to Fix a Broken Slide Projector
By Jeffrey Saunders

A slide projector is a great way to store, share and show photos, presentations and other information. But what do you do when your slide projector is having problems. How to fix it can be a simple matter of jiggling a few wires, cords or cables, or taking the entire projector apart and taking a peek as to whats inside.

The most common problem with a slide projector that needs fixing is a simple projector jam. A projector jam is when one of the slides is stuck in a position that wont allow the carousel to rotate. Now, this may seem like a minor inconvenience, but it should also be the first area you look into when your projector is having problems. How to fix it, and remove the jammed slide can be done in a matter of steps.

1. Shut the slide projector off and let it cool down for a few minutes.

2. Remove the slide tray by loosening a latch or placing a coin in the middle of the tray & turning it

3. Turn the tray upside down

4. Locate the jammed slide and carefully remove it

5. Place the tray back into the projector

6. If the slide isnt damaged, insert it back into the carousel

The next time you notice your slide projector is having problems, how to fix it is to follow the steps listed above. Normally, when a slide projector wont fully rotate, its because of a jammed or lodged slide within the carousel. Carefully removing the trapped slide should solve any projector problems youre experiencing.

If youve followed the steps noted above, and you find that still your slide projector is having problems, an experienced technician may tell you how to fix it, and guide you through various stages of repair. The larger the slide projector you have, the more chances it has to jam. So before you take your projector apart or visit a potentially expensive repairman, be absolutely certain that it isnt a jammed slide thats causing your projector problems.

If your digital image projector is having problems, how to fix it can be a matter of replacing a burnt out bulb, ensuring that all your cables are properly connected to rebooting the entire system itself, depending on the sophistication level of your projector. Always go through the instruction manual when your digital projector is acting up.

Sometimes when your projector is having problems, how to fix it can be as easy as remounting it or reinstalling it. An improperly mounted projector can sometimes not project any image at all, and may appear to be broken and in need of fixing. Check to see if your projector is mounted and affixed straight. If it isnt, take it down and remount it, being careful to make certain that its properly mounted. That should solve any issues regarding your projectors refusal to show images. If that does not work, then you may consider taking your digital projector back to its point of purchase for a qualified inspection.

Jeffrey Saunders loves do-it-yourself technology

He also likes great deals on refurbished electronics. Amazing prices on big brand names like the Apple iPod Nano

And more fantastic deals on great items like digital camcorders.

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Computer Projector Rentals in Florida

Computer Projector Rentals in Florida
By Eric Morris

Computer projector rentals in Florida provide all kinds of computer projectors for short and long term rental in the state. Florida is one of the prominent hubs for all major activities, business centers and educational institutions. Today, there are many rental companies in the state, specializing in computer projector rentals.

Computer projector rental is the most apt and economical way to possess expensive computer projectors for limited time duration. Today, the computer projector has become an indispensable part of digital presentation in almost all schools, colleges and companies. The enhanced qualities of computer projectors have imparted tremendous changes in the method and quality of presentations. These qualities have led to the popularity of computer projectors among people in all sections of society.

RUSH Computer Rentals Inc., Fort Lauderdale Computer Rental Service, and Saint Lucie Co. Civic Center are some of the major companies in the field of computer projector rentals in Florida. Most of the rental companies in Florida handle both corporate and personal orders. There are also online computer projector rental companies that provide services to people in and around Florida.

Depending on the need, one can avail computer projectors for rental in Florida on daily, weekly, monthly and yearly rentals. All types of computer projectors, ranging from mobile computer projectors to meeting room computer projectors, can be availed for rent. Almost all top brands of computer projectors including Infocus, Proxima, Mitsubishi and Toshiba are available in the state for rental. The rental rates are determined by the model and the duration of the rent. It will fluctuate from company to company and from city to city.

However, getting computer projectors for rental is a complex task, as most projectors are designed for different operating systems and even processors. Thus, it is always advisable to determine the type of the computer projector you need before renting it.

Computer Rentals provides detailed information on computer rentals, laptop computer rentals, computer projector rentals, desktop computer rentals and more. Computer Rentals is affiliated with Laptop Computer Sales.

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An Introduction To LCD Projector Rentals

An Introduction To LCD Projector Rentals
By Marcus Peterson

LCD is a technology that is used to present a digital image for viewing, for instance, on a laptop or via a projector. LCD is the acronym for Liquid Crystal Display. Most projectors use LCD technology. They can easily incorporate text, graphics and video. These types of projectors are also known as PowerPoint projectors since they are mostly used for presenting PowerPoint slides by corporate houses and business houses for business and sales presentations.

LCD projectors are versatile, reliable and portable. They can be easily connected to video, PC and laptops; they are compatible to most systems. They can project images on any surface with equal brightness. They can present data, graphics and video. These projectors weigh less; they are easily transportable. They have long-life bulbs. They have built-in speakers.

LCD projectors are characterized by resolution, luminescence, dimension, weight and contrast. Resolution is defined as the number of horizontal picture dots times the number of vertical picture dots. Most projectors are usually XGA or SXGA i.e. 1024 X 768 pixels or 1280 X 1024 pixels. LCD projectors have a brightness or Lumens of 1000-5000 lumens. They vary in size from small to bigger sizes and they weigh two pounds to 100 pounds. The contrast ratio determines the handling of the subtler colors.

The major suppliers of LCD projectors are Toshiba, Sanyo, Hitachi, Canon and Plus. These manufacturers cater to all the segments with prices ranging from $1,000 to $15,000.

The rates of LCD projectors depend upon the type of projector and usually the daily rates vary from $100 to $300. The rates for multiple days are given with discounts.

LCD projectors are mostly used for conferences, staging events and business presentations. Their high resolution, ability to handle colors, and quick start up make them a powerful piece of multimedia equipment to convey the message across a large audience.

Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

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Video Projector Guide

Video Projector Guide
By Riad Haddad

Well; the world of Projection is certainly a vast place to wonder uninformed, so get informed. I will try to keep this guide as simple as possible.

Things to look for when buying a projector:Manufacturer/MakeThere are many projector manufacturers these days that make it seem impossible to choose from. But to make it simpler, many manufacturers now a days use parts that are supplied from other manufacturer. In other word not all the parts in a projector is manufactured by the same manufacturer. Thus many projectors already have similar components incorporated into them. Always read reviews posted on computer magazines and online computer magazines before purchasing high end/high priced projector. Look for a company that offers the best warranty & support. Brands like Sony, Panasonic, Toshiba, Sharp, In-focus, View sonic, Mitsubishi, Epson are amongst the best there is.

TechnologyThere are many technologies available today. But the main two types are LCD & DLP. In simple DLP which stands for Digital Light Processing uses hair width tiny mirrors to reflect light into a screen. DLP offer better overall image but cost a lot more. So for home users its better to opt for LCD based projector because of there much lower price and higher availability. Also LCD projector offer excellent image that is comparable to DLP. Big companies and presentation oriented businesses well find DLP a better choice. There are also projections panels. Projections panels are a form of transparent display that are placed over an ordinary Overhead projector and used to project the same type of video sources that normal projector use. Projection panels are cheaper than the types described earlier.CRT Projectors are an old projection technology that is no longer used these days.

ResolutionResolution is very important aspect to consider when purchasing a projector. Many older models are VGA (640*480) & SVGA (800*600); these models are good for displaying movies and other low resolution images, but will no be sufficient for projecting high quality images demanded by high end application such as 3d modeling, games, simulators and CAD. Check the simple chart below:

640*480 (VGA) resolutions are good for Video Games, VHS, VCD and Standalone DVD users. This panel is perfect for DIYers wanting to keep costs at lowest.800*600 (SVGA) resolutions are perfect for Computer based DVD playback and normal Windows and operation system work. (Plus all the above)1024*768 (XGA) resolution is perfect for high resolution Computer Games and design applications such as AutoCAD (plus all the above)1280*1024 (SXGA) resolution is perfect for HDTV applications and computer software that require high detail (plus all the above)

Color DepthColor depth states how good the LCD represents color. Its the number of colors a monitor or an LCD panel is able to show. A good color depth is 16-Bit; although 24-Bit is strongly advised, this is the color depth that most high end projection panels have.

Lamps An important thing to investigate is the type of lamp used. Check the replacement price of lamps and life expectancy. It would make you no good if you purchase a low price projector and later find out that every lamp replacement will cost you 400$. New lamp models can work for a minimum of 10,000 hrs.

BrightnessBrightness output is expressed in lumens. The higher the lumens the better the image is displayed in less than perfect lighting conditions. Some new projector models can display a vivid image even with the light on. 2000 lumens is a good choice for home use. Choose 3000-4000 for presentation theaters and jobs that require a bright image in a not too darkened room. Lumens rating of below 2000 such as the low priced 1300 models will have to be operated in a completely darkened room (Pitch Black).

ConnectionsConnections are a very important factor when choosing a projector. Composite, S-Video and RGB is almost standard on most models. You will need RGB for hooking your computer or laptop; Composite & S-Video for connecting DVD players and VCRs. Some newer models have DVI inputs too that enable them to be connected to high quality video systems like a video editor or digital video cameras. A remote control is a must; you don't wan to get out of your comfy chair every five minutes. Some applications require two RGB connections for simultaneous viewing of different video sources, so make sure to check for it if you need it.

Long throw/Short throw projectionIts important to decide where you are going to place the projector. If the projector is going to be placed in front of an audience then you will need a short throw projector. And if you need to fix the projector some where behind the audience (Far from screen) you will need a long throw projector. What happens when you use short throw projector for a behind the audience application is that the image will be too large to fit on screen, and if you use a long throw projector for short distances you will get a very small and unclear image.

DIY ProjectorsWell this is interesting. Did you know that you can build a projector yourself, its not that hard really and it will cost you a fraction of retail prices? You should have basic knowledge with DIY projects. The image quality is very good you won't believe it. Though some patience is required in order to complete the projector.

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Riad Haddad is a Software Developer and Internet Marketer specializing in state of the art custom solutions; from database development to website marketing.

www.fitsoftinc.com

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Film Projector Rentals

Film Projector Rentals
By Marcus Peterson

A film projector projects reels of film onto a screen to form a continuous image. Film projectors have the need to wind and unwind the reels and adjust the arms and distance. Despite the competition from video projection, film projectors have a niche market of buyers.

Film projector rental demand comes from residences, film festivals and university and school campuses.

Film projectors come with different widths such as 8mm, 16mm and 35mm. The type of projector depends on the space available and the number of audience. The demand for 35mm comes mostly from festivals while 8mm and 16mm find demand from other segments such as residences and student shows in universities.

Many of the rental companies are either owned by the universities or reside in the campuses. The demand for film projectors is cyclical as film festivals happen during a particular period of a year. Even for residences, the demand is usually in the summer months, when families like to have get-togethers outdoors.

The rental rates for projectors depend upon the type of films. 16mm projectors have a starting rental rate of $20 per day, 35mm at $50 per day. The total rental rates go up when we consider the screens and other accessories. Most of the a/v industry rental companies hold fewer stocks of film projectors. The rental companies in the university campuses charge lower fees for student groups.

Film projectors face severe competition from video projectors. New technologies such as DLP and audio/video storage media slowly make the conventional film based technologies obsolete. When compared with video projectors, film projectors lack features to control contrast and brightness. Even with cinema halls transitioning to digital forms of projection, film based projector manufacturers are dwindling and therefore are the rental industry of film based projectors.

Projector Rentals provides detailed information on Computer Projector Rentals: A Guide, DVD Projector Rentals, Film Projector Rentals, LCD Projector Rentals and more. Projector Rentals is affiliated with DLP Projectors.

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