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SHEDDING THE LIGHT ON PROJECTION |
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What is Keystone?
Keystone is a visual distortion caused by a projector pointing up or down at a screen. This distortion usually occurs from top to bottom and is seen as an image being wider at the top than the bottom. Keystone can be corrected either electronically using the controls on your projector or by aligning the bottom of your projector to be parallel with the bottom of the screen. The term keystone is taken from the center-stone of an arch.
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