overexposed areas and artefacts

V-Ray V-Ray for 3ds Max Issues
1

hi, i face a view problems in my actual rendering.
1.) i get too bright areas in shaded regions where the windows hit the walls.
i only can get rid of that by using override materials for the walls and the windows with quite dark gi material (rgb 40/40/40).
by using brighter gi materials the overexposed areas return.
but with the dark gi material i of course get very dark shaded areas…what i want to avoid.

is there a way to exclude an object(walls) to send gi to another object(windows)?

2.) the artefacts i solved by rerendering with lower settings - see the image below. can someone declare me why i get rid of the artefacts by lowering the settings?

599×835 54 KB

2

For the artifacts, they are caused by the sun; if you make it “invisible” they should go away.

Best regards,
Vlado

3

hi vlado, tried that at first. but with the higher settings the artefacts stay, also when the sun is invisible. they only dissappear largely when i render with the lower settings.
what can i do about the bright areas on walls and windows?

4

I’m not quite sure; it would help if you can send us the problem part of the scene to vray@chaosgroup.com

Best regards,
Vlado