Adams thought he was doing well if he had a dozen a year. He was certainly exposing many more sheets of film than that.

I think the idea is that you've got to shoot a lot to get some good ones, whether you're a great photographer or not, and a great photographer will not only have a few great ones in the pile of proof sheets, but will see their potential to be a great images from the straight proofs. Editing is part of the process, and so is the post-production, whatever the method.