I already use interpolate 2 for the image_maps I use for the isosurface. I
posted a new shape a few minutes ago that has nearly no artifacts whatsoever.
That is because I used triangle_wave for the pigment. Had I used scallop_wave,
the bad effects would have been very noticeable.

Samuel Benge

Bob Hughes wrote:

> If you notice that when using image_map pigments the 'interpolate' makes
> a big difference. Seems 2 is best to me, not 4. The isosurface probably
> uses a similar convention itself rather than straight procedural
> pigment. If it did it would obviously have no noticeable artifacts, or
> so I would think. Perhaps there is a resolution limitation then? Based
> upon the 1 POV unit square a pigment is usually confined to?

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