
Originally Posted by
adlabs6
I've seen instances where a skins color palette exceeds what bright can output into 256 colors without having some obvious banding. But your skin is very narrow in color range so I am pretty sure that this is not the problem.
Something that might be an issue here could be the fact that the shading on your skin is using very subtle tones... so subtle that they perhaps cannot be accurately represented in 256 colors.
It's like when a digital photo of an open blue sky has very obvious blue banding. The gradient is so very fine that there aren't enough colors to show it properly. You can simulate this in your paint program very easily, with a big very feathered brush. Even in 24 bit color you can create bands when a large area is covered by a very narrow palette.
Possible solutions (if this is what's happening) are to increase the strenght of the surface effects layers so they have more contrast for bright to work with (thus shrinking the banding size down to a reasonable level). Alternately, you might try a layer of fine noise to break up the pattern and help the dither work more smoothly.
Hope this sounds helpful, if not post and I'll try to explain it better.