For a simple test scene, I am using an HDRI image both as background as well as lighting.
I want to be able to change my 3-D objects independently from the background in the compositor.
The usual way to do that would be to render out the objects on a transparent background and alpha-over them to the background image.
My problem now is: I can set “transparent” only for the whole render… not for different render layers. So if I render my objects on “transparent”, my HDRI will never be rendered.
Right now, I circumvented the problem by rendering out the background seperately, save it as an image-file and use this as the compositor background. But that isn’t an optimal solution.
Is there a way to solve this problem Did I - again - miss something obvious?