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Top 10 Questions about Projectors

Top 10 Questions

Remember those old projectors your parents used to show your vacation pictures? And remember those big old projectors your teacher had to haul out to show you a slide show at school? Well, progress has definitely been made with projectors. Multimedia projectors are amazing these days. And to help you understand these new technological wonders, so you know what to look for when youíre buying one, weíve assembled the top 10 projector questions. Check them out.

1. What should I look for in a projector?

The first thing you need to consider when buying a projector is your usage. What are you going to be using it for? If you want a video projector, youíll find a full selection of really cool home theater projectors.

If youíre using your projector for presentations, then youíll want a data projector. In these models, youíll need to consider your usage, too. If you need high resolution for your presentations, then get an XGA projector. If youíre showing PowerPoint presentations, then a lower resolution of SGVA will be fine.

2. What are ANSI lumens?

ANSI stands for American National Standards Institute. Theyíre the organization that sets the standards for lighting strength, or brightness, which they measure in lumens.

When youíre looking at projectors, youíll need to know that 1000 lumens is good for projecting a clear image onto a six-foot screen.

3. How long do projector lamps last?

Lamp life, as itís called, can be anywhere from 1000 hours to 2000 hours. Most of the time, the lamps last about as long as the manufacturers say they will, but there are some things thatíll affect the lamp life.

To avoid your projector getting really hot, which is the number one cause of reduction in lamp life, make sure to give it a cool-down period. Dust on the lamps and in the filters can cause overheating, too, so be sure to keep your projector properly cleaned and maintained.

4. Should I get an LCD projector or a DLP projector?

This is another area where you need to consider what youíre using your projector for. The main difference between LCD (liquid crystal display) and DLP (digital light processing) is the clarity and brightness of the projected image.

If youíre presenting spreadsheets and that type of information, then LCD is just fine. Itís not quite as clear as DLP, but itís adequate for that particular use. If youíre projecting moving images, then youíll need a sharper resolution, and a DLP projector does a great job of that.

5. Whatís VGA?

VGA is one of those acronyms that the industry loves to use. It stands for Video Graphics Array, and represents the resolution of the image your PC transmits. There are other, more advanced forms of VGA, like SVGA and XGA.

They all have different resolutions, which are expressed as horizontal lines by vertical lines. For example, VGA resolution is 640 x 480. SVGA is 800 x 600, while XGA is 1024 x 768.

Resolution quality is forever improving. Now thereís SXGA, at 1280 x 1024, and UXGA, at 1600 x 1200. Obviously, the more lines on the screen, the sharper the image. The standard for most projectors is XGA, because itís the most compatible with PCs.

6. Whatís Keystone correction?

Where you place your projector in relation to your screen has a lot of bearing on the quality of the projected image. If youíre off to one side of the screen, then the image will look wider at the top or bottom of the screen. Keystone correction, sometimes called lens shift, corrects this fault automatically, to a certain point.

So if youíre a little off-center with your positioning, the Keystone correction will center it. Many projectors have an adjustable Keystone correction that allows you to be way off-center, and still have a balanced image.

7. Can I project onto a wall instead of a projector screen?

If youíre projecting an image that doesnít have to be particularly bright, then a white wall will serve adequately as a screen. But keep in mind that projector screens have special coatings that display brighter images.

If you donít mind a reduction in the quality of your brightness, your color hue, and your sharpness, then a wall will be fine, unless itís not smooth enough or white enough.

8. Whatís liquid coupling?

Many projectors have an air space between the lamp and the lens. But some have what they call liquid, or fluid, coupled optics. In these types of projectors, a fluid replaces the air in that space, providing a much better quality image. It also increases the depth of field, which is something LCD and DLP projectors canít do, because their projections are 2-dimensional.

9. Do I need a wireless mouse for my projector?

If you like to move around the room as youíre doing a presentation, then a wireless mouse is a great tool. You donít want to be dragging wires around, distracting you from your presentation.

Some people find it takes them a while to adapt to the wireless mouse, especially when using the pointer, but, with a little practice, it can be mastered and youíll wonder how you ever did presentations without it.

10. Can I use my projector for home theater?

With the tremendous growth in home theater systems today, people are looking for theater-like quality at home. The new projectors can give you that quality at an affordable price.

DLP projectors are much better than LCD projectors if youíre using them for home theater systems. The image is sharper, brighter and, generally, more theater-like.

In Conclusion

You can see by these top 10 projector questions that projectors arenít what they used to be. And if youíre wanting to impress with a quality presentation, then youíll be happy about that.

And if youíre using your projector for home theater, youíll be amazed at the high quality of the images.

And where to get them? Online, of course. The Internet is the place to go for the best deals, whether youíre looking for a video projector or movie projector, a digital projector, projector screens or accessories Ė anything youíll need to project that great image. Because that image will reflect on you, and you always want to be looking your best, donít you?

About the Author:

Arden Mellor is a successfully published freelance writer, one of experience and diversity. The knowledge brought to you through Arden's articles has been designed for simplicity. The world is much too complicated, and Ardenís contribution to the world is to bring the complexities of life into a simpler arena, one that anyone and everyone can understand and use. Arden writes many informative articles on such topics as dlp projector reviews, slide projector rental and Sony digital camcorders, and our wishes are that you benefit from the wisdom presented in these articles in making life simple.

This article on the "Top 10 Questions about Projectors" reprinted with permission.

© 2004 - Net Guides Publishing, Inc.

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