วันอังคารที่ 29 ธันวาคม พ.ศ. 2552

Beginners Guide To Projectors

So it was decided that you want a projector, but not sure where to start? Do not panic, in reality there are only a few simple decisions you need to do to know what projectors for you. Before you begin, you should decide whether you want to use the new projector for displaying movies, video games or presentations. This will affect how bright or dark room and your ads is what resolutions you need, plus things like connection options. The developmentwhere your projector from the screen.

To get started, you have the brightness and contrast. Most projectors have declared their brightness of two ways, Lumens and foot-Lamberts. Unfortunately, the lumen rating does not guarantee a brightness is very useful, as it often does not take into account just the size of the final image or reduction due to normal use as a max. In dark environments, such as a dedicated home theater room, looking for a brightness rating 40 FL, and will increase with the amount of ambient light outside the exhibition hall.

Then you have to think about the supported resolutions, you want to view. The best thing is 1080p, the so-called "full HD" and the Blu-ray and other high-definition content to see properly. Most games and computer presentations only need 720 or a resolution of 1024x768, so if you do not watch movies primarily to save money and go for a lower spec model.> 1080p and 720p are two resolutions for 16:9 widescreen, while 1024x768 is 4:3, which is more a square is used by many computer monitors and televisions. Consider his view the screen. To obtain the use of the screen, make sure the resolution matches the projector.

The contrast is often more useful as a measure of the quality of the brightness of the projector. A high-grade projector has a contrast ratio of 5000:1 or more, we all check to see if the projector is useda "dynamic iris" to help strengthen the contrast ratio. This work, limiting the flow of light in dark scenes, allowing the projector to produce "blackest black". Many of these projectors even mentioned on / off "instead, which is the difference between a black screen and white. A better measure is ANSI contrast, with a checkerboard pattern, and measures the difference between the squares of light and dark. This value will be affected by a dynamic iris, and normallylower value.

Finally, take the "throw" of the projector. "Short-throw projectors are designed to place in the vicinity of the screen and still produce a great picture, while" long-throw "projectors are the opposite. Also mentioned is the amount of zoom available, which decrease increase or is the image a little. Another useful feature for most projectors lens shift. This will be a greater flexibility in positioning allow the projector to the screen allows thatTo the image up and down or left and right by a certain amount without distorting the image.

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