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Why a grey coating instead of white
One of the key properties of high quality projected video is contrast. Contrast is defined as the difference between the brightest and darkest portions of an image. The latest generations of digital projectors have very little difficulty in producing high levels of brightness. However, the darker areas of an image, specifically black areas, are a different matter entirely. Black is defined as the absence of light. Any light in a room, even light produced by the projector and reflected from the room’s wall and ceilings, will compromise the accurate reproduction of black.
By using a neutral grey reflective surface, or screen, the levels of incidental or unwanted light can be significantly reduced without affecting color accuracy and overly compromising image brightness. Less unwanted reflected light means better black levels, which in turn means enhanced contrast. Unless the viewing room is completely light controlled, including dark, non-reflective walls and ceiling, a grey screen will always provide better black levels and higher contrast than a white screen. Goo Systems’ “Which Goo” online calculator will help you decide which of the Screen Goo grey coatings will provide the maximum possible contrast in your room with your projector.
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