Quote:
Originally Posted by Quoth
The setting is not needed if it was a real 300 dpi. It can only do 150 dpi perfectly.
It's basic mathematics and physics.
Pixel layout, where the R G B, unlike all other displays, don't cover the dots.
[R][G]
[G][B]
Thus a diagonal line pattern at 300 dpi resolution can be green or magenta, and black not white and black (or a slanted skinny font).
Some OLED displays, though few LCD displays, use the same 2 x 2 pattern. The mono resolution quoted is the same as the colour, 1/2 of the real pixel density. The stripe based LCD and OLED do something eink can't do, the actual pixels are not square, but a 3:1 shape so that the overall R G B is square.
Each dot R, G or B surrounded by white is on a 300 dpi grid. The colour print doesn't fully cover the pixel so that the display isn't too dark, that's why it can't do saturated colours.
Skinny white italic or oblique text on black will look the worst. It's better than Triton, which used simple stripes entirely covering the pixels, so vertical resolution was unaffected but horizontal was 1/3rd.
R G B
R G B
Just because marking claim it's 300 dpi in BW & 150 dpi in colour, and you are happy with it, doesn't make it really 300 dpi mono. It's impossible unless you take apart the screen and scrape the coloured printed dots off.
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It is really 300 dpi B&W. It's still 1264x1680 Black &"White" cells. It just has an added color filter sticker. When cells are set to black, you see black regardless of the color filter, and the SAME number of black cells are used to construct a letter at the same font size as a Libra 2. When you make mono-colored text (not black, not "white", something like red) there is an obvious clear sharpness loss compared to black mono text.
I suppose dark mode (aka white text) looks like crap is a fair point, but I still don't understand the rational for dark mode on eInk to begin with.
And sure, there is a minor sharpness loss because of the color filter, but that's also true of flush glass screen layers, pen digitizers, frontlights, etc. It doesn't come ANYWHERE close to looking like 150 B&W ppi.