RalphLambrecht said:
Please forgive me for asking, but seriously, why?
Let's see:
Minox - rarely, but the camera (an Atoron) is such a jewel
110 - Pentax 110 - has there ever been more camera in a smaller package? I also use it in an old Weathermatic that I can let kids take swimming, in my neighbor's son's model rocket, and in a Vitoret that fits in my palm
645 (in this case 8 on 127) - because a Kodak Vest Pocket Autographic is fun to carry around
4x4 - a beautiful little Yashica 44, and until very recently - superslides
126 - my warped sense of humor strikes - I have an Instamatic 104 with a dive housing! Besides, I like the expression on the guys' faces at the lab when I hand it to them.
35mm - all the usual reasons
35mm panoramic (24x56mm) - some scenes are best captured with the Horizon
6x6 - Size, plus it's what I learned with, and I use TLRs and 6x6 SLRs a lot
6x7 - two rollfilm backs came with a horseman 980 I got for a song, so...
6x9 - biggest negative possible in a camera I can still put in a coat pocket
2x3 sheet - because it is a bit lighter to carry around than 4x5, and one of the 2x3 cameras has more movements than my 4x5s
Polaroid pack film - proofing and transfers
SX-70 film - can't look a gift horse in the mouth - the camera was free and has an interesting (though possibly apochryphal) history
4x5 - because size matters, but portability does too
5x7 - because size matters
Admittedly I could easily eliminate the Minox, 110, 126, 127 and SX-70 film, all of which I use in part for amusement instead of serious photos. But what is wrong with amusement?