Render has gray spots all over it

Question

I didn't use cycles render a long time and got a problem. If I use dark environment lighting, blender doesn't render it smooth. Maybe it happens because I'm using denoising, I don't really know.

So here is how it looks:

And the whole render look like this:

Gray spots mess up all render. I tried to search how to remove them, but still didn't find anything.

That blotchy look means Denoising artifacts. Use more samples and use less agressive settings for the denoiser. — susu, Jun 21 '20 at 17:36
Does this answer your question? Why is my render noisy/blotchy? — susu, Jun 21 '20 at 17:37

score 0 · Answer 1 · answered Jun 21 '20 at 09:51

You could do these things:

You probably have too little samples in your render. Increase your samples and re-Render.
Render with "Denoising Data" or if you have it enabled, render without.
If you render with the old denoiser, render with the Intel Open Denoiser (The node in the compositor)
If that doesn`t help, please post a render without denoising.

Render has gray spots all over it

1 Answers1