MobileRead Forums - View Single Post - Forma How many shades of grayscale does the Forma have?

NiLuJe · 10-14-2019, 04:30 PM

@rashkae: I was going to say that one can play with the hardware dithering settings and/or input to make the pattern more obvious, and in particular thanks to how processing is highly vectorized, that can translate in visible, wide vertical stripes

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(You may be talking about much narrower vertical "stripy" patterns, though, and that would just be the pattern induced by the matrix).

If you have a Mk. 7 on hand, you can switch between HW & SW dithering in KOReader. Except we're using the kickass matrix ported from ImageMagick, so it kinda rocks

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Also keep in mind that dithering patterns have an extremely adverse effect on eInk ghosting, in that they basically feed each-other in a loop, so you may want to take that into account when making comparisons (i.e., start from a flash to white).

10-14-2019, 04:30 PM	#8
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	@rashkae: I was going to say that one can play with the hardware dithering settings and/or input to make the pattern more obvious, and in particular thanks to how processing is highly vectorized, that can translate in visible, wide vertical stripes . (You may be talking about much narrower vertical "stripy" patterns, though, and that would just be the pattern induced by the matrix). If you have a Mk. 7 on hand, you can switch between HW & SW dithering in KOReader. Except we're using the kickass matrix ported from ImageMagick, so it kinda rocks . ---- Also keep in mind that dithering patterns have an extremely adverse effect on eInk ghosting, in that they basically feed each-other in a loop, so you may want to take that into account when making comparisons (i.e., start from a flash to white). Last edited by NiLuJe; 10-14-2019 at 04:38 PM.