Quote:
Originally Posted by tomsem
I guess I don't understand the nature of the tradeoff between less eInk flash and clarity. On my Nook STR it doesn't seem to matter (or I don't notice) whether it is page #1 or page #6 - they look equally clear/unclear. And forcing refresh with n/n doesn't make it clearer (though that tends to fix ghosting).
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It's all about ghosting. The flash-to-black refresh resets the pixels to all-black and then all-white. Each incremental pixel change between refreshes on the e-ink screen is slightly imperfect, which means that black text removed by a page turn leaves behind a faint ghost of not-quite-white that tends to build up with multiple page turns. You can most easily see the ghosting in an area that's empty on the current page, but had text on the previous page. Also an image removed by a page turn tends to leave behind a slightly fainter region of not-quite-black text on the next page. I don't find it too noticeable at the 6-page refresh interval, and the less obtrusive page turn is nicer, so I think they made a good trade-off.