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The Best Projection Screen
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By Template Ready
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There is a wide variety of screens each one with a choice ofprojection surfaces. Selecting the right combination to meetyour needs is important for optimum results.
The following is a guideline for selecting a screen that suitsyour application. Although these recommendations will work inmost situations, each must be looked at not as a strict rule,but rather as a guideline for determine your actual needs basedon your own situation.
Pick the type screen that best suits your particular needs. Forexample, choose form front projection or rear projection screens in eitherpotable, wall or ceiling mounted models in either manual orelectric versions. Generally, if your projection application ispermanent, then wall and ceiling screens are your best choice.If, however, you find your needs require moving the screen todifferent locations then a portable screen is a betteralternative.
Determine the optimum screen size based on room dimensions,planned audience seating size and arrangement. The rule of thumbis to fit the screen to the audience-not to the projector.
I recommend the following formula for determining screen size:
， Screen height should be approximately equal to 1/6 thedistance from the screen to the last row of seats, allowing textto be read and detail to be seen in the projected image.
， Ideally, the first row of seats should be approximately 2screen heights away.
， The bottom of the screen should be a minimum of 4 feet abovethe audience floor, allowing those seated toward the rear of theaudience to see the screen. This may require additional screen"drop" for ceiling hung screens.
， Select the appropriate format for your projectionapplication. Common formats are as follows
Common Applications and Aspect Ration Width/Height NTSC Video1.33
PAL Video 1.33
Letter Box Video 1.85
HDTV Video 1.78
35MM Filmstrip 1.32
2x2 Standard 35MM Double-Frame Slides 1.50
， Choose the screen surface that best suits your projection andviewing requirements. If the screen will be used for multipleprojection methods, choose the screen surface that meets therequirements of the lesser performing projection method. Forexample, if using a slide projector and a video projector, choosethe screen surface for the video projector since its lightoutput is generally less than a slide projector.
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