On Tue, 2009-10-20 at 12:22 -0800, Christopher Howard wrote:
> Though having a far from sufficient understanding of how the GIMP brush
> painting process works, it seems to me like this is the fundamental
> problem: In making black-and-white brushes semi-transparent, GIMP
> somehow "levels out" the grey-scale, so that certain ranges of darkness
> become the same. On a fuzzy brush, the result is that the fine
> graduation is changed to appear stepped or banded.
The problem here is that the brush masks are 8bit only. With such a
limited set of values to start with, banding is basically unavoidable.
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