HFrik <fri### [at] zonnetnl> wrote:

> How can I avoid the black cracks in the isosurface?

In your example you didn't specify a max_gradient.
POV-Ray will therefore use the default max_gradient of 1.1
Check the messages at the end of your render. POV will suggest a better
max_gradient, probably around 3.7
So add 
  max_gradient 3.7
in the isosurface block, and the cracks should dissappear.

Since the max_gradient varies a bit throughout this scene, rendering
could be faster when using the adaptive evaluation of the max_gradient.
Instead of max_gradient 3.7, try this:
  evaluate 2.0, 1.1, 0.8
This should render faster and probably without cracks.



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e-mail:sme### [at] skynetbe

http://users.skynet.be/smellenbergh

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