For a moody, low-key close-up, should I set my aperture to the stop that the key light (incident light) reads on the face, or should I set the aperture a half-stop down from that. I have been setting aperture to the stop that reads on the key side (so if that side of the face reads 2.8, that's my aperature) and would let the fill side be two or three stops under. My footage, however, seems a bit hot on the key side of tha face. Should I set aperture a half-stop down from what the key-side of the face reads?
Thanks