Quote:
Originally Posted by elmoglick
So, I've played with a total of 9 Kindles and spent quite a bit of time documenting and comparing screens, in all kinds of lighting conditions. I've found that the one with the darkest text also had the darkest background (and vice versa), so the ratio of screen darkness to text darkness appears to be pretty consistent in all units - the actual Vizplex screen manufacturing codes (Waveform Version) didn't correlate at all to screen or text darkness. My guess is that it's either a controller calibration or QC issue (perhaps both).
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On the Sony Reader there's a variable resister (or capacitor - I forget which) which can be "tweaked" to adjust the screen brightness but, as you say, it alters both the text
and the background together. I suspect it's a "calibration" setting on all eInk devices.