"Blotchy" look?

Hi guys.

i’ve been doing this rendering for a design & tech project, but i keep getting a weird blotchy look especially on the white semi circle.
Could somebody please explain what setting i need to change to fix this? ive been fiddling around with things for a while but still nothing :slight_smile:

Thanks for your help :slight_smile:

Re: “Blotchy” look?

see here:

http://forum.asgvis.com/index.php?topic=631.0

from the starterkit:

Some little rules:
- less shadow details and more speed → max IM rate at -1 (default 0 high quality)
- blotchy image → set more IM subdivs (good for interiors)
- more speed → try less IM subdivs until light blochtes are visible