MobileRead Forums - View Single Post - Paperwhite 2018 looks worse than 2013? (Picture inside)

NiLuJe · 02-04-2020, 05:03 PM

@j.p.s: Yeah, I'm wary of wording it that way, because we're really not (intentionally) displaying anything other than those specific 16 shades of gray. We're just tricking our brain into making it seem so.

The eInk tech itself happens to lend itself very well to the sort of pattern dithering produces, which certainly helps the illusion, too.

----

Note that, on crappy LCDs (older 7bpc+1, which did dithering on their own to fake 8bpc), you could actually detect banding on some gradients (or dithering artefacts/jitter, depending on how it was implemented).

The same thing is true today for cheap fakeish (8bpc+2) HDR displays. But HDR is a vastly more complex issue, so let's not go there (spoiler: it's a mess) ^^.

02-04-2020, 05:03 PM	#46
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@j.p.s: Yeah, I'm wary of wording it that way, because we're really not (intentionally) displaying anything other than those specific 16 shades of gray. We're just tricking our brain into making it seem so. The eInk tech itself happens to lend itself very well to the sort of pattern dithering produces, which certainly helps the illusion, too. ---- Note that, on crappy LCDs (older 7bpc+1, which did dithering on their own to fake 8bpc), you could actually detect banding on some gradients (or dithering artefacts/jitter, depending on how it was implemented). The same thing is true today for cheap fakeish (8bpc+2) HDR displays. But HDR is a vastly more complex issue, so let's not go there (spoiler: it's a mess) ^^. Last edited by NiLuJe; 02-04-2020 at 05:07 PM.