Am 01.10.2015 um 10:08 schrieb clipka:

> Now for the main course, the artifacts: The bad news is that whenever
> your density function is non-linear, contrary to intuition you will
> /always/ get banding artifacts as long as you aim for a smooth result.
> You can crank up the number of samples like mad, but you will never get
> rid of them entirely, and our perceptual system is very sensitive to
> this type of artifacts.

(As a side note, colour banding might even remain a problem if POV-Ray
could compute the media perfectly. In that case, banding would occur due
to colour aliasing in the output image generation. Again such artifacts
can only be avoided by replacing them with a tiny bit of noise, known as
dithering in this context.)

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