I've seen all the comparisons of people shooting Portra +/- 3 or 4 stops and scans looking indistinguishable. That may very well be the case, but C-41 is a print film after all. I just recently made RA4 contact sheets of Ektar 100, Gold 200 and Natura 1600. All contact sheets were exposed for minimum time for maximum blacks (black on the non exposed parts of the film) Ektar was shot at 100 and the contact sheet looks perfect. Gold 200 was shot at 200 and the contact sheet looks great again. Natura 1600 I exposed by setting my meter to 800 and the roll actually looks overexposed. I know I can get decent prints and scans by adjusting paper exposure but I don't see any immediate benefit to overexposing these films by a whole lot. Correct me if I am wrong. Btw, Gold 200 is a very very beautiful film. I wonder what makes Portra 'professional' and Gold 'consumer'.