Enable the mip production shader in Maya mentalRay

The Mental Ray production shaders are hidden by default.  mip_* mib_* mia_*

Simply go to your script editor, type in:

optionVar -intValue "MIP_SHD_EXPOSE" 1;

Also check out info on the finest in Mental Ray websites from Zap

http://mentalraytips.blogspot.com.br/2007/10/production-shaders-hidden-treasures-of.html

To find more info you can always search "Mental Ray production shaders" as well as read the 2013 Mental Ray production manual online.

http://docs.autodesk.com/MENTALRAY/2013/ENU/mental-ray-help/

HDRI test in mentalray

lights intensity : 150000 from right

lights intensity : 10000 from left

All lights:

Final test

The HDRI Handbook 2.0 is out

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digital emily project....

info on forbes.com
and about Paul Debevec....