Hi
I have a scene with a set made from photos.
in this set, I have a CGI car on a road.
I've modelised the road, made it a MATTE/SHADOW material.
So I have only the car and it's shadow in the rendered image. I can so composite this render with the 2Dset.

Now, I use final render, and the MATTE/Shadow doesn't work anymore. How can I make a rendering pass with the car and it's shadow only?

thank you

Potoche