Quote Originally Posted by Steve Smith View Post
I think Edward Weston and Minor White used it but I'm not sure who was first or who added the pre-.
I can't resist questions of detail, so I checked with Google Books. The earliest usage wrt photography that I could find was in 1947, in Morgan & Lester, _Graphic Graflex Photography_. The second one is in a 1951 article in _American Photography_ about Minor White, where White is quoted using and explaining the term.

It actually kind of makes sense to me; it's a shorthand for "pre-exposure visualization", which you gotta admit is a bit of a mouthful.