Comment by nitrogen
5 years ago
With HDR and wide gamut on the horizon, things are moving even further away to ever requiring any form of dithering.
You still need dithering to prevent visible banding in really subtle color gradients.
5 years ago
With HDR and wide gamut on the horizon, things are moving even further away to ever requiring any form of dithering.
You still need dithering to prevent visible banding in really subtle color gradients.
You still need dither for print, where subtle gradients on-screen can suddenly become very visible. I’ve had some large format giclee prints surprise me with nasty color banding.
I suspect some of the lines that were showing up in the OP's error diffusion test might be paralleling color banding lines in the original images.