This page provides information about the Make Shadow Catcher Tool.
Overview
The V-Ray Shadow Catcher is a Matte object, which is not directly visible in the scene, but shows the received shadows. This tools is ideal for achieving a photorealistic render by compositing a 3d object with a shadow on top of the environment map or the backdrop.
The Make Shadow Catcher tool creates a VRayObjectProperties tag with a matte preset. Select the object that will be shadow catcher in your scene and then select the Make Shadow Catcher tool to add such properties.
If you wish to manually create a Shadow Catcher object, see the How to Use Matte Objects tutorial.
UI Path: V-Ray menu > Tools > Make Shadow Catcher
Example: Make Shadow Catcher
This example shows how making the ground Plane into a Shadow Catcher changes the look of the scene.
Without shadow
With shadow