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Old 10-04-2012, 02:22 PM   #10
guma
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Quote:
Originally Posted by fjtorres View Post
The other thing that comes to mind is that front-lit eink devices can drive their brightness lower than most (if not all) LCD devices. (Front-lit eink displays can go to zero lighting and still be readable.)

The two most likely reasons for *some* people having issues with extended reading off LCD screens are the much higher absolute brightness and absolute contrast. It is possible to have too much of an otherwise good thing.
Well ... if I had to make a guess then I would assume that non-lit eink-screens (and good old books) are relatively easy on the eyes because, unless a very close-mounted reading light is used, the screen does not stand out in brightness compared to its environments whereas it is possible (and quite common) to read on a self-lit display in a dark or dimly lit room where the display itself stands out as the brightest light source.
If it actually is this brightness-differential between screen and environments that causes eyestrain it should not matter whether an offending display is front- or back-lit.
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