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3dsmax mental ray image sampling on normal maps

AlecMoody
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AlecMoody ngon master
Im not a mental ray user (vray and brazil).

The scanline renderer is too slow for me to use (2.5 star super sampling with about a half million polygons at 4096 resolution).
I tried mental ray but the normal map's sampling looks terrible. I upped in the min/max settings and have tried switching from box to mitchell. This produced a nice smooth/detailed image in the frame buffer but the actual normal map still looks aliased and noisy.

Anyone know how to set up mental ray for this job? Should i just use xNormal?

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