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SBT · 10-26-2013, 04:03 PM

Well, future-proofing stuff is tricky...
You can match the 16 shades in imagemagick to exactly match e-ink shades, but I've never bothered – worst display approximation on the display will be within 3% of the original.
For b&w line drawings, I find 16 shades sufficient even on computer screens.
I like to keep the epub files below 20MB, so I have to squeeze the image quality somehow on the most thoroughly illustrated books. I can choose between reducing resolution, quality, or colour space. I go for colour space, and keep slightly higher resolution as a nod to futureproofing.

10-26-2013, 04:03 PM	#6
SBT Fanatic Posts: 580 Karma: 810184 Join Date: Sep 2010 Location: Norway Device: prs-t1, tablet, Nook Simple, assorted kindles, iPad	Well, future-proofing stuff is tricky... You can match the 16 shades in imagemagick to exactly match e-ink shades, but I've never bothered – worst display approximation on the display will be within 3% of the original. For b&w line drawings, I find 16 shades sufficient even on computer screens. I like to keep the epub files below 20MB, so I have to squeeze the image quality somehow on the most thoroughly illustrated books. I can choose between reducing resolution, quality, or colour space. I go for colour space, and keep slightly higher resolution as a nod to futureproofing. Last edited by SBT; 10-26-2013 at 04:11 PM.