We have a recurring shoot where we continue to run into the same two issues. Our set consists of a medical exam table sitting on top of a green screen. The talent sits on the exam table and we record 'Doctor/Patient interviews'.
ISSUE 1: When the talent is on the taller side, their feet hang down past the bottom of the exam table and create really harsh shadows on the green screen, making the footage very difficult to key.
ISSUE 2: The dark area on the front of the exam table, behind the talent's legs, is very noisy.
I believe these two issues are linked and both have to do with lighting. However, I have yet to find a permanent solution to either one of them. I am currently setting a small LED light in front of the camera that helps with the shadows, but it still isn't solving the problem.
Our camera is a Panasonic HMC150 and I use the 'Keylight' effect in After Effects to key the footage. Keying is very difficult around the feet shadows and some of the green reflection shows on the exam table, which in turn, ends up being keyed slightly creating a lot of noise. I use the 'Remove Grain' effect to help remove the noise.
Any advice on a different lighting setup, keying solution, or anything else that could help this situation is greatly appreciated. I've attached images demonstrating the issues.