0
$\begingroup$

Light Problem

Was modelling a lamp yesterday,rendered it (one on the left), then saved and closed Blender. I then came back to the file today, added some objects to the scene, then rendered it again (right), somehow the lighting has gone wrong. Afaik no settings were changed, can anyone help how to revert to the one on the left?

Improve this question
$\endgroup$
4
  • $\begingroup$ So further testing from the save file, deleting most of the objects in the scene seems to make the light render properly. Is there somehow a problem by having many objects in a scene? $\endgroup$
    – flipdolph
    Commented Apr 14, 2020 at 15:01
  • $\begingroup$ uhmm so further testing, there's another object in the scene with a different emission material, and removing it seems to fix the problem. Is there a way for me to keep that material without messing with the light> $\endgroup$
    – flipdolph
    Commented Apr 14, 2020 at 15:09
  • 3
    $\begingroup$ I guess it is just the denoiser, just turn it off and see whether that's working... $\endgroup$
    – brockmann
    Commented Apr 14, 2020 at 16:25
  • $\begingroup$ agreed with Brockman, those are denoising artifacts specially visible when using low samples count. $\endgroup$
    – Bruno
    Commented Apr 14, 2020 at 16:41

2 Answers 2

Reset to default
3
$\begingroup$

Those look like artifacts created by the denoiser. Use more samples to render and lower values for denoiser.

Or you might want to try the Intel Open Image Denoiser instead of the built in one.

Related links:

Type of Denoiser built into Blender

How to avoid noisy renders in Cycles?

Improve this answer
$\endgroup$
-1
$\begingroup$

Try to uncheck Multiple Importance at light source:

enter image description here

Improve this answer
$\endgroup$
2
  • 1
    $\begingroup$ Did you read the tooltip? $\endgroup$
    – brockmann
    Commented Apr 14, 2020 at 16:55
  • $\begingroup$ Have you tried my solution or just declaim tooltips? $\endgroup$
    – RUben
    Commented Apr 14, 2020 at 17:12

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .