Quote:
Originally Posted by Aleron Ives
Isn't it the same thing? If you don't do a full refresh, cells will be unable to fully transition to black or white, and you'll end up with cells that are some shade of grey, i.e. lower contrast. In extreme cases this will preserve content between pages instead of clearing it, which is called ghosting, but the phenomenon is always present to some extent, unless you do a full refresh on every page.
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I don't know if there is a technical difference. Ghosting varies between eink screens - on some devices it's more noticeable than others. The text growing paler happens on every device (I think I can say this with some certainty, having owned and used 11 different eink models), it's just that some devices have better contrast (blacker blacks) to begin with, and so the decreasing contrast may also be less noticeable. The contrast does always grow less with partial refresh, though - I haven't seen an eink screen where this doesn't happen. It's inherent in the current eink technology.
Why some people claim to never see it even with no full refresh on at all, I don't know.