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Old 06-14-2018, 03:34 PM   #6
jhowell
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Posts: 7,149
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by rem736 View Post
why would the light need to be on at all when there's plenty of ambient light?
The idea is to lighten the background so that it is more white (instead of the usual gray) giving higher contrast.
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