Geometry: Polygon mesh
UV Mapping: Yes
Unwrapped UVs: Non-overlapping
Plugins used: No
3ds Max 2011, V-Ray, Corona (PBR)
Who works in the V-Ray version is lower than 3.1. Be careful, the materials in the BRDF section are Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - which is preferable for you.