HI friends, i lighting a 3D car, and i have problens to set up my scene because on dark shaders have many grain (noise) in this objects. Other shaders appears normal, only dark shaders are bad. I’m using LC + BF to Gi, adaptive 1 and 25, overwrite enviroment with hdrs and on gi blured hdr. Settin…

Hello, What about your lighting pass? In some cases 32 subdivisions for the lights is too low. From what I see the GI pass is causing a fair amount of noise - you can try and tweak it with a bit more subdivs, changing the Threshold value to 0.005 or a bit lower might help as well.

Thanks friend, i’ll try and post the results here. Thanks!

Can you show me your “color mapping” settings? Best regards, Vlado

http://www.igorvfx.com/forum/vray/color\_map.jpg Color mapping settings vlado

The Color mapping settings looks fine. Did you try to increase the Light subdivisions or decrease the Adaptive Threshold?

If you’ve got a hdri being used, you’ll get cleaner results by loading it into a domelight rather than using the environment tab. With your lights, the 32 subdivs are getting divided by your 25 max aa samples, so 32 light subdivs divided by your 25 max aa leaves you with 1.28 light samples for each …

At least in Max I would check the cutoff value for the VRayMtl in the options. Perhaps it is too high? (Does Maya have that?) And as suggested above I would try a lower threshold and double the GI subdivs as a test)

Grain on black (dark) shaders

V-Ray V-Ray for Maya V-Ray for Maya :: Issues

igordesign February 18, 2015, 1:36pm 10

Thank you friends, I will do what you guys suggested and then post the results here.

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Grain on black (dark) shaders

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