I've never seen the point of 645 also. With the advance of film emulsions and lens technology, 35mm is more than a match for 645 IMO. But 6x6, 6x7 and 6x9 not only make you enlarge less, but also make you work very differently. I never stepped up to 4x5, as to me, this took away portability and handheld image-taking. Yes, press cameras could do it, but I'm no Weegee, so I'd never change films in seconds.
I've never seen the point of 645 also. With the advance of film emulsions and lens technology, 35mm is more than a match for 645 IMO. But 6x6, 6x7 and 6x9 not only make you enlarge less, but also make you work very differently. I never stepped up to 4x5, as to me, this took away portability and handheld image-taking. Yes, press cameras could do it, but I'm no Weegee, so I'd never change films in seconds.