Quote:
Originally Posted by rashkae
There is white space surrounding each of the printed colour filtered dots. When displaying image in B&W, the space around the coloured dot, as well as the dot itself, can be white, black, (or shaded in between.
When displaying in colour, the white space has to be blacked out, letting light only through the colour printed area, hense halving the resolution., (and giving it that grainy, pixelated look for those looking very closely). A Very neatly done compromise, and a trick E-ink can do that lcd display can not.
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It's what I suspected to make the screen pastel and not too dark. But the mono resolution of the actual panel is 300 dpi. The dots are always there, thus it's not as good as 300 dpi without coloured dots.
It's just a printed pattern on a mono panel, so of course you can do the same on LCD, but on LCD there is no need because they can do retangular 1/3rd width pixels for stripes, or smaller pixels, so no-one bothers to quote the mono resolution of the LCD.
Stripes is more common on LCD than the 2 x 2 or more complex CFA because it simplifies R G B addressing to having essentially 3 parallel controllers. With the CFA of 2 x 2 the colours need mapped to a matrix. However no LCD controller I know has a mode to turn off the mapping and allow a twice resolution mono image. No doubt that's what the eink controller is doing. So for mono content you can treat the panel and the controller as if it's the mono eink. But it's not. You can generate text or mono patterns that will favour one or two colours of dots and thus you will get green, red, blue, cyan, yellow or magenta pastel lines or patches on certain fonts, dithered mono images or mono images 1 pixel diagonal structures.
So it could be done on LCD, but pointless, and is only a pseudo 300 dpi mono mode. It absolutely is lower quality than a pure mono 300 dpi screen, so misleading marketing.
Also as well as making the screen more pastel shaded and thus brighter, the alignment of the colour printed layer doesn't need to be as good because the dot is a smaller area than the pixel. This and the limited levels of eink means also darker shades that are not primary colours shift in hue. Your eyes are sensitive to hue shifts.
So Kaleido 3 compare to Triton on the same panel gives a brighter image, with more mono resolution (but not true 300 dpi) at the expense of much worse colour.
Some people will be happy with it, but really 6" and 7" is too small. It needs to be 9" to 13" and even a Kaleido tinted Sage (8") would be far better.
Degrades novel reading and not big enough for colour content. I can't justify buying a Libra Colour.