Reflection artifacts from VraySky map

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

Hi,

when I use VraySky with VraySun, I get some reflection artifacts that are difficult to eliminate.

Here’s an example with beer simulation. With only VraySun, and no VraySky -- no artifacts.

With only VraySky and no sun, 6 seconds of rendering -- noise, but no artifacts.

With only VraySky and no sun, 2 minutes of rendering -- the artifacts keep popping up 1 by 1, longer render times just means more of them.

(click the large photos to see)

Thanks
/Jonas

Sun, no SkyMap. No artifacts..jpg
Sun, no SkyMap. No artifacts..jpg926×850 76.3 KB

SkyMap, no sun. 6 seconds of rendering, no artifacts..jpg
SkyMap, no sun. 6 seconds of rendering, no artifacts..jpg761×857 66.8 KB

2 minutes of rendering, the artifacts pop up 1 by 1.jpg
2 minutes of rendering, the artifacts pop up 1 by 1.jpg630×853 61.4 KB

2

Make the sun invisible.

3

Thanks, indeed that solved it. But I don’t understand why -- making a light source invisible should only affect direct viewing, not reflections and refractions?

/Jonas