Liner Workflow Renderman, personal note.
May 14, 2012
Do not use Maya Linear Workflow render option combined with Renderman Exposure controls. If you do that your renders will have double gamma correction.
The best option so far should be correct the render using Renderman Exposure controls and gamma corrections for the color textures as usual, and leave the Maya render options as default (sRGB).
Thats it, keep it simple 
- Corrected render, with Renderman Exposure 1,6 and texture gamma correction as .625
- Uncorrected render, which means Renderman Exposure 1.0 and no gamma correction for the textures at all.
