I want to make a room completely black to film lit subjects in an entirely dark background and foreground, so that only the subject is shown. I don't know what the most money efficient way to do it is and also what material to use. I heard garbage bags are too reflective obviously. Would painting cardboard black work? Would basically any black fabric that doesn't seem to reflect work? My plan was to get a little bit of each black fabric I can find at a fabric store and do some tests with a still camera. This is for film, but i suppose it doesn't really make a difference with digital. I know this question isn't that appropriate for this forum but I just couldn't find any other flimmaking forums that are used as frequently as this one. Anyone have any experience with this approach to lighting?