Help! - Octane + C4D compositing problem Tweet

[e.mike.h]

I'm a relatively new octane user and have come across this issue for quite a while now. When I'm trying to composite a 3D object onto a backplate I get this black shadow wherever the plane is that I am using as a floor. Weirdly it only seems to happen with car models. Yes I have checked the matte option in the material settings and I am using a HDRI for the lighting. Thanks in advance.

[bepeg4d]

Hi Mike,
about this argument, please have a look at this discussion:
viewtopic.php?f=87&t=63808
in conjunction with the Render Layer technique:
http://www.aoktar.com/octane/RenderLayer.html
And please, next time post your questions in the Maxon c4d section, for a faster answer:
viewforum.php?f=30
Happy Rendering,
ciao Beppe