To gain some more knowledge on iray for maya, I recently spent some time to set up this scene (NURBS drill model by Onur Aytekin). Since iray for maya handles its custom passes through light path expressions it was a good opportunity to look into that too. The final render took about 9 hr on my machine in 3.5 K resolution. As with the last project, defining materials and light setup in iray for maya is just a pleasure!
