Quote:
Originally Posted by pdurrant
If the underlying greyscale screen is 300ppi and the colour filter is working on a 2x2 pixel, then the colour display should be 150ppi.
A 100ppi colour resolution would imply an underlying greyscale screen of 200ppi.
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Or it's a stripe filter R G B, so you have 100dpi across the stripes and 300 dpi along the stripes.
A 2 x 2 cell using 300dpi eink would be 150 dpi.
Was there ever a 200 dpi eink? I agree, the
R G
G B
2 x 2 layout at 100 dpi would imply 200 dpi.
I'd not like to see less than 150dpi and ideally no less than 200 dpi as the limited 14 greys, black and white with a colour filter allows very limited antialiasing.
Has there been ANY ereader less than 150 dpi since 2008?
A 200 dpi colour (a minimum IMO) as
R G
G B
would need 400 dpi.
Also held at normal reading distance, rather than further distance of a PC screen, 100 dpi colour may have obvious fringing artefacts with graphic content. Real world photos are the most forgiving. Decent serif fonts at a size you'd use on a PW3 or graphic content would be poorer on a 100 dpi colour than 100 dpi mono.
I remember 80 column text on a PAL resolution monitor. VGA was bad on cheap screens using TV CRTs.
R G R G R G
G B G B G B
R G R G R G
G B G B G B
R G R G R G
G B G B G B
Certain lines will create very strange artefacts if the visual resolution is too low.
Conventional 3 x 1 underlying
R G B R G B
R G B R G B
R G B R G B
R G B R G B
R G B R G B