Q: How to get a transparent shadow in a render?
I have a tree positioned on a white plane (could be other color than white, it does not really matter).
What I would like to have is a render of the tree with its shadow, without the white plane appearing in the render.
I also want the shadow to have a transparency alfa value, so it will be partially transparent when the file is viewd in image editing software.
Can it be done somehow? Thanks.