Caustics Light

V-Ray V-Ray for Maya General
1

Hi all

I have an HDR for the dome light, which I want to use for lighting the scene.
And then I want to add a Sun light for Caustics only.

How to do I go about switching off Caustics for the Dome light and rendering only Caustics for the Sun.

Also, how do I go about targeting a small area for the Caustics - to cover the area around the geometry.

Cheers

2

You can control the Caustics generation from the Photon Emission Tab here: VRaySun / VRayDome

To focus caustics generation only in specific area use Photon Radius parameter.
To disable generation of the DomeLight caustics, decrease it’s parameters to 0.