I am trying to get an alpha for my reflections for a special need. Doing a search, I found that the shadow catcher material has a feature that when you turn off shodaow, reflection comes up as an option. This was for C4D. I tried this and reflection does not come up.
My hack right now is to do a reflection pass and manually remove the black but this is not always yielding a good result.
Thanks in advance,
Jose