3 ms·

> They can display a total of 32,000 colors and 200 to 300 PPI, depending on the screen size. I’m going to guess that’s 15-bit colour (32,768 colours) in the f

> They can display a total of 32,000 colors and 200 to 300 PPI, depending on the screen size. I’m going to guess that’s 15-bit colour (32,768 colours) in the form of RGB channels, 5 bits per channel (32 possible values). For full colour imagery, I imagine you’d still want dithering to simulate higher bit depths. 300dpi is fine enough that I believe you could make it very subtle indeed, so that you could well have to examine it quite closely to notice. > It will be able to display over 40,000 different colors … but then again, maybe it’s not done as RGB data in this way. I have no idea what array of inputs a range of 40,000 would correspond to. I’m not familiar with this sort of hardware.

fencepost 6y ago
It may depend in part on the nature and color of the pigments being used - they may have 64k colors in theory but not all distinguishable. There are also ongoing discoveries in pigments, for example YInMn Blue which still has very limited availability. https://en.m.wikipedia.org/wiki/YInMn_Blue https://en.m.wikipedia.org/wiki/YInMn_Blue https://news.artnet.com/art-world/yinmn-blue-comes-market-1921665 https://news.artnet.com/art-world/yinmn-blue-comes-market-19...
- chrismorgan 6y ago
  I very much doubt they’d shrink 65,536 to 40,000, even if some of the values were indistinguishable from others. That’s not how marketing works! If you have a 3×9 gear combination on a bicycle, you call it 27 gears, never mind that a lot of it is overlap and that it’s even possible for some ratios to be identical (e.g. 26:9 and 52:18 is conceivable).
s800 6y ago
Wouldn't e-ink be in CMY(K) instead of RGB since it's reflective?
- rubatuga 6y ago
  No, still RGB. We're not mixing pigments, just using subpixels.
  - Grustaf 6y ago
    The printed dot in a CMYK raster doesn't mix pigments either!
    - rubatuga 6y ago
      They are subtractive, so it’s the same as mixing pigments.
      - Grustaf 6y ago
        Yes, that’s my point, that not just mixing physical paint acts subtractively!
itronitron 6y ago
Each pixel has all eight pigments in it. I'm assuming that is RGB,CMY, Black, and White. It's not clear whether they can mix two or more of those pigments in a single pixel or if they can only switch one fully on and the others off. It would be nice if they provided some detailed gradient color wheel images on the device.

fencepost 6y ago

It may depend in part on the nature and color of the pigments being used - they may have 64k colors in theory but not all distinguishable. There are also ongoing discoveries in pigments, for example YInMn Blue which still has very limited availability. https://en.m.wikipedia.org/wiki/YInMn_Blue https://en.m.wikipedia.org/wiki/YInMn_Blue https://news.artnet.com/art-world/yinmn-blue-comes-market-1921665 https://news.artnet.com/art-world/yinmn-blue-comes-market-19...

chrismorgan 6y ago
I very much doubt they’d shrink 65,536 to 40,000, even if some of the values were indistinguishable from others. That’s not how marketing works! If you have a 3×9 gear combination on a bicycle, you call it 27 gears, never mind that a lot of it is overlap and that it’s even possible for some ratios to be identical (e.g. 26:9 and 52:18 is conceivable).

s800 6y ago

Wouldn't e-ink be in CMY(K) instead of RGB since it's reflective?

rubatuga 6y ago
No, still RGB. We're not mixing pigments, just using subpixels.
- Grustaf 6y ago
  The printed dot in a CMYK raster doesn't mix pigments either!
  - rubatuga 6y ago
    They are subtractive, so it’s the same as mixing pigments.
    - Grustaf 6y ago
      Yes, that’s my point, that not just mixing physical paint acts subtractively!

itronitron 6y ago

Each pixel has all eight pigments in it. I'm assuming that is RGB,CMY, Black, and White. It's not clear whether they can mix two or more of those pigments in a single pixel or if they can only switch one fully on and the others off. It would be nice if they provided some detailed gradient color wheel images on the device.