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Grand Sorcerer
Posts: 11,732
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Join Date: May 2009
Location: 26 kly from Sgr A*
Device: T100TA,PW2,PRS-T1,KT,FireHD 8.9,K2, PB360,BeBook One,Axim51v,TC1000
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Not the research. The paper.
Not everybody has a lighted ereader, not everybody with a lighted reader uses it all the time, and the lighting is different in the two products. Tablet lighting lasts perpendicular to the screen surface directly into the user' eyes while frontlit readers illuminate parallel to the surface and the light that reaches the eye is scattered.
Very different lighting systems, very different light profile, possibly different spectra.
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