I know turn off alpha contribution for objects in VRay, Would it be possible to have a matte objects alpha mask or occlude objects that the are masking, like "matte alpha" check box 
I think the blur Matte Mtl free plugin from Blur studios does that, and it does help with compositing.
I bet it already in VRay and i just have not found it yet eh!
Colin

I think the blur Matte Mtl free plugin from Blur studios does that, and it does help with compositing.
I bet it already in VRay and i just have not found it yet eh!
Colin
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