Thank you for your answers.
I understand that it will not be easy to do. In, fact, the object that I want to shoot is a really simple one, just a bloc that will become a web button after the hand will leave the screen (switch to flash).
So we already know that we will not use the green color for this object when we will texturize it.
The problem is that I don’t make 3D, and I would like a really good integration, by keeping reel hand shadow. Is that possible? Sorry, in this domain, I am really not experienced.
But you know… They ask: “We have a fun idea, do you know how to do?” – “No, but it could be fun” – “Ok let’s do it!”