This web page displays the results of a number of rendering tests that compare the image quality and rendering speed of Maya’s software renderer, mental ray and Pixar’s prman.
The occlusion renders compare the way the set of normals in each render is affected.The maya software render appears to have less ray hits from the normals to each object therefore it is lighter. Where as the mental ray which uses raytrace is slightly darker. PRMan uses a point based occlusion that does not require raytrace but uses an environment light and appears the darkest because it has more accurate ray hits.
Mental Ray 1:48 Samples 64
RenderMan Raytrace :17 Pixel Samples 9
RenderMan Point Based 2:58
For Maya Software shows much more aliasing than the other renders which means you have to up the anti-aliasing but that will also increase your render time. The renders below remain at the default value for its anti-aliasing.In The mental ray renderer there are 3 lights with only 2 rendering shadows. Compared to the shadows of maya’s software render, the aliasing has almost disappeared, but the shadows show little difference. In the renderman renders, the shadows don’t appear as sharp and the shadows can be reused to shorten render time.
Maya Software :06
MentalRay Raytraced :15
RenderMan Deep Map :42
Depth of Feild
These are different comparisons using depth of field. The first 3 have a main focus on the camel each using different F-Stops. The last focuses on a tree.
4 F-Stop/Camel Focus —- 5.6 F-Stop/Camel Focus
6.5 F-Stop/Camel Focus —- 6.5 F-Stop/Tree Focus