I’ve been stunted by this problem and was wondering if anyone else has come across it. Hopefully, I can describe it correctly—attached is a sample scene. Should be able to see the problem as soon as you hit render.
Building with a figure and planters in a patio.
After I've calibrated the camera and set up the planes for objects to cast shadows on (Compositing Tags set w/ Composite Background enabled), I usually put in some lights to light the objects. But I've recently tried using a Sky Object to light my scene. I love how the Sky object lights the objects more realistically. However, the Sky Object causes the planes with the Compositing Tag & Composite Background enabled to...reappear in the render as dark semi-transparent versions of themselves.
The planes with the compositing tag do not appear when I use regular lights though, just Sky Objects it seems.
Has anyone else encountered this problem?
I’m running on Cinema4D R20 + Mac Mojave.
Thanks so much everyone!