Blotches...

[phile_forum]

Here's an apartment I'm working on. Check out the blow-up of the ceiling detail above the kitchen. How do I eliminate those nasty blotches? I see stuff like that all the time with Kray.

Lighting in this scene is one area light with the sunspot motion modifier (1km away), a bunch of downward-facing spots above the kitchen units, and the skylight textured backdrop.

Phil

[silverlw]

To me it looks like insuficient numbers of FG and/or to far apart.
Could you please send me a simplified version of the scene (just lightsituation and building) so i can look at your settings and tweak it for you? Crapmess@bredband.net

A quick tip to solve all caching problems,turn off Cache irradiance and use for example MinFG 600 MaxFG 0. Then you dont even need to care about optimizing the scene.

[phile_forum]

Hi Silverlw. Thanks for the tip. I just sent you the scene.

I've tried switching cache irradiance off and it works like a charm to get rid of the blotches, but it does make the scene more grainy - so I'm currently working to see if I can reduce that as well.

Phil

[silverlw]

Yes turning irradiance cache off and using static FG value is a "press render and wait until done" mode much like in Lightwave or fprime. If you still get noise with FG 600, use higher until you get the quality you desire.

[silverlw]

Here is outcome with Fullscreen grid AA 3X, and Finalgather Min300/Max0 = Montecarlo For primary bounce. FullscreenGrid AA Straighten out your thin lines and pipes also.