Strange artifacts on cycles render

Question

Do you have any idea what is causing these artifacts on my cycles render?

I'm using a sun light source to illuminate the scene. 128 samples.

I've pasted a screenshot of the material that the artifacts are happening on

Denoising will introduce new artifacts, and is certainly not a substitute for a decent number of samples. Read: How to properly denoise renderings? — , Feb 21 '19 at 16:37

score 1 · Answer 1 · answered Feb 21 '19 at 14:09

1

I solved the problem by raising the samples count to 400

answered Feb 21 '19 at 14:09

Krellzar

Looks as if you were using denoising on a extremely low sample count. – Chris Feb 21 '19 at 14:19
I did use denoising, so it could definitely have been that. I have just never seen it before and I always use denoising. Even with low sample count – Krellzar Feb 21 '19 at 14:23
The default denoiser of Blender has some issues especially with monotone and flat surfaces, which your case does fit perfectly. The results are those clouds that form. – Chris Feb 21 '19 at 14:32

1 Answers1