Hello Ed,

Volumetric objects in Carrara can't cast shadows (Primivol as well as Carrara's volumetric primitives). It a limitation due to the current implementation of this kind of primitive inside Carrara: volumetric primitives are rendered in there own space, appart from the scene. It's this same limitation that makes the distant lights the only one available for volume lighting. I sent these remarks to Eovia when I was working on Primivol and I hope the SDK will show some improvment for Carrara 5.

Regards,
Julien