Quote:
Originally Posted by SchrodingersCat
I'm 99% positive that there are "different grades" of e-ink displays.
Any engineering / manufacturing process will have variance in consistency. Quality can vary batch-to-batch or even device-to-device.
Manufactures have two choices: first, throw out all the components that aren't within ideal tolerances. That's very wasteful and expensive, but it gives you high reliability when buying, and it's what they do when making Ferraris and Tissot watches.
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I agree. It's common sense and it was confirmed by someone at the e-ink producers. That's not to say Amazon uses lower grade screens.
I handled a K4 the other day and thought the background was a little darker than my 650. I couldn't say if it was less or more readable without putting the two next to each other, but it did look darker. Still very good in any case. I was impressed by it. Found the buttons little and difficult to use though, especially the nav button. Heavens know why they didn't make that button bigger.