1- Open Environment (
and apply a bitmap image for background
2- create a VRayPlane beneath your object(s)
3- open Material Editor (M) and select an empty slot
4- change material type from "standard" to "VrayMtlWrapper"
5- on "Base Material" apply a "Matte/Shadow" material
6- on matte/shadow basic parameters, turn ON "opaque alpha" and "recieve shadows"
7 - click on "Go To Parent"
8- on vraymtlwrapper parameters, turn OFF "Generate GI" or set it a low value (like 0.2)
9- turn OFF "Generate Caustics" and leave "Recieve Caustics" turned ON and its value to 1.0
10- turn ON "Matte Surface"
11- turn ON "Shadows"
leave everything else on default values and render your scene....
(from vizdepot.com)