Hi, I've received footage filmed on a Sony Z1E. The subject is standing holding their hand in front of them with their elbows pointed outwards. When keying out with Keylight I get small white spots at the joints of the subjects armpits and where their arms then corss over their body. The best thing I've been able to do is reduce screen balance to 0 and do some colour correction to compensate this gets them nearly gone but still there. The footage isn't brilliant as the green screen isn't very evenly light, it's lighter at the top and darker at the bottom.
Is there any tips you could give or is it just a case of I can't pull a good matte from the footage?