white background render with transparent shadows

[masterzone]

Hello Guys, I'm using Cinema since first release and Corona since public beta. I know very well the multi-pass cinema4D system but is far different from Corona Render or similar render engines due to technology.
Do you have a tips how to quickly export a render with white background such an industrial product or simple object on a photo-stage but with transparent floor shadows?
I do some project two years ago with some multi-pass shadows and some photoshop action with special overlay but right now I have not enough time to make experiment and I would like to hit the results in few steps.
Thanks!
Alex

[Beanzvision]

Hi there, I usually go with something super simple such as below:

[masterzone]

mmmm the shadow catcher! I use it only for photo-compositing or video-compositing, never thought about it for transparent shadows.
Thanks so much for your tricks...and time...

[Beanzvision]

You're welcome! I hope it works out ;)