Tragical vignetting

I run into a problem always when I want to add a vignetting to the postprocess, the vignette pattern makes concentrical artifacts, and after multiple attempts, I can’t imagine, why.

Any ideas?
Thanks in advance.

Perhaps add dither to increase apparent dynamic range.

Here is a .blend file and a rendering of an empty scene and postprocessed only with wignetting.


Vignette teszt.blend (425 KB)

This was a stupid problem, after realizing that other pictures are ugly also, I realized that sometime the color depth was accidentally set back to 16 bits, causing the rough color gradients mentioned here. (After around a month :slight_smile: