How to catch the shadow of selected objects?

[zjie]

Hi, I have made an example of this scene, is there anyway that I could render just the sphere’s shadow? Because somehow the whole room is catching unwanted shadow (ceiling etc), but I only want the shadow cast by the sphere. I have attached my setting, I used a vray object properties to the walls.

Here is the scene: https://drive.google.com/open?id=1UDL5Pt0ixJfwH1nmayHzJFpropdaXgOT

[yolov]

Hi. I think I’ve found a way to do what you need by disabling “no GI on other mattes” in the vrayObjectProperties node. Try disabling that and you should get a result like this: