[Stuart Robertson]

I’m going to disagree with all of you here. Although a “perfect”(0,255,0) greenscreen makes it easy to pull a hard-edged matte, the extreme luminance in the green channel will overwhelm the subtle edge details from your original photography, and the absence of any red or blue component in the fringe areas (hair, blur) will really mess you up when it comes to neutralizing the green spill. Based on experience, I’d recommend shooting greenscreens with a camera/light setting that results in a green area reading around 25,130,10 , and 30,70,160 for shooting a bluescreen.