I'm trying to light a bottle with several light emitting planes. In front of those planes I have planes with SSS to get diffused light. I switched off shadow and camera for those objects, but still they cast a shadow of themselves. Any pointers how to get rid of them?
This is less about casting a shadow and more about how the plane is emitting directionally. Specifically, there is no emission coming from the infinitely thing plane along the bottom. That missing illumination is what is causing the missing result.
A mesh lamp with a degree of thickness should alleviate that phenomena. Otherwise one would need to craft additional illumination or a gobo to hide the peculiar result.