View Full Version : Background Problems

06 June 2009, 04:50 PM
Okay, I rendered using Mental Ray with Final Gather. I canít seem to get rid of the circular blotches in the background as you can see on the picture, I thought that if I increased the filter (Final Gathering), it would make it look less blotchy. I donít know what can be creating those annoying unwanted spots. Can you guys give me some tips on how I can take away those nasty blotches?

06 June 2009, 11:14 PM
If you increase the number of final gather rays or increase the final gather interpolation does that take care of them?

06 June 2009, 05:07 PM
No that didn't take care of them :sad: . So I decided to just use a surface shader instead of blinn for the backdrop. And this is how it turned out looking:

06 June 2009, 05:43 PM
What are your raytracing settings at?

06 June 2009, 06:54 PM
its FG radius size and interpolation.

make them both bigger. But... what i would do is do the BG in a separate pass not using FG.

a surface shader has no shading... so you will only get the color of the shader. its good for making RGB passes. or black holes.

06 June 2009, 09:31 PM
Thanks, increasing the values of FG max and min radius and interpolation fixed the problem. :applause: :love:

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06 June 2009, 09:31 PM
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