I am currently painting a face bump map in blender. On the image you can see these lines that appear on for example the nose from the painted bump. The model is low res since this wouldnt change anything in the texture. Even without a brush texture these artifacts appear. I tested a 4k and an 8 k image but there was not even a difference..

Hope someone knows the problem.

Maybe one more: Is it better to paint the details of the skin or with sculpt and then bake an image?

enter image description here

32-Bit Float image enter image description here

  • $\begingroup$ The resolution depends on the Dyntopo's resolution. $\endgroup$ – FFeller May 21 at 17:28
  • $\begingroup$ No, i have a multires on it which is now on level 1 or so. Its a bump map i painted that is independent of the mesh resolution.. $\endgroup$ – Schamph May 21 at 19:41
  • $\begingroup$ Can you test with Full Float image for bump instead of regular image depth? It isn't going to help by increasing 2k to 4k, but the bit depth is the usual suspect here. $\endgroup$ – Craig D Jones May 21 at 20:20
  • $\begingroup$ I have added the test with a 32-bit float image for the bump. I really dont know why this is.. because its even without a texture brush like this.. $\endgroup$ – Schamph May 21 at 21:52
  • 1
    $\begingroup$ Ou. Changing the interpolation mode from linear to smart in the image node is changing the result dramatically. Way better! $\endgroup$ – Schamph May 22 at 0:44

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