What camera are you shooting your green screen with? Yes…the keyer is very important, but make sure you:
#1 – Shoot with a good camera that supports 4:2:2 color space (if your budget allows for that)
#2 – Light the screen separately from the talent.
If you can, get yourself a Canon HV 20 or HV 30 (under $800) and shoot and record directly to hard drive via HDMI, you can shoot HD with 4:2:2 color space and it will certainly help you in the keying process (you’ll be able to use almost any keyer and get great results).
You can see what I mean here re: the HV 20/30:
https://www.cinematography.com/index.php?showtopic=37656
Anyhow… good luck and post what you used (keyer wise) and your results with it. I’m intrigued.
Cheers!
Cheers!
– Marcelo Lewin
Pixel Heads Network
https://www.PixelHeadsNetwork.com