Hello, Im an intermediate b&w student just starting out with the 4x5. I am on a budget this semester and polaroid film is a little expensive for me. Is it possible to proof an exposure using a digital slr? i.e Take a shot with my D70 and then mirror the exposure on my 4x5? Will this give a close or aproximate representation of what my neg (and print) should come out like (with normal development etc etc) I'm not trying to skip out on the zone system by any means, but I don't own a hand held spot meter and the spot meter on my D70 has not given me consistant results. I am assuming that this should work, given the fact that all exposure meters (including the one in the D70) meter for middle gray or zone V. I guess I just dont have a full understanding of the way digital cameras are calibrated vs. film. Thanks!