Let?s say I want to achieve a deep rich black and I?m lighting for a close up. I want little grain, and considerable fall off. There seem to be two schools of thought. 1. Use a low speed film and the parts of the frame that aren?t even exposed will go absolute black. 2. Use a fast film and achieve a ?true black? by virtue of a diminishing gray scale. My question is: what are the benefits/hindrances of either approach? In my case, I?m at a film school where my largest available light is a 2k, and it doesn?t really seem I can?t really use method 2. So should I use method 1 with let?s say 100T, and only expose for the subject, to get total black in the background? Furthermore, when I look at classic noirs, The Big Combo for example, where I don?t believe they had anything but 200 ASA at the most, should I proceed with the notion that they too were simply not exposing portions of their frame to achieve true black. And if I use method 1 what happens to the edge of the frame between properly exposed and underexposed? Is there a grainy ring around everything? And what if I?m using Super 16? If I can get more precise with this question, please let me know.