I've been asked to take head-and-shoulders portraits of some people against a "green screen" — presumably to make it easier to then paste those shots into another picture.
I've never done this before, so I'm wondering if anyone can offer any advice. This will probably be done indoors, under florescent lighting. I'm planning on using a tripod, and have some reasonably fast lenses available.
Should I use a flash, or use the "natural" light? Would it be better to do it outdoors? (The temperature will probably be in the -10C range (15F).
Is it better to have a shallow depth of field, or a wider one? Should the subject be right up against the background, or out in front of it?
Anything else I should know?