wondered why Donald made that time limit. To limit the number of cameras to talk about, or as the postwar manufacturing technology changed?
Maybe he tells us.
I like folders -- but I don't always have big pockets. The smallest roll film camera will surely be a folder, but really small folders pretty much vanished by the early 1950s; 35 mm went to solid bodies of one sort or another, and medium format was bigger folders and TLRs until the 6x6 and 6x7 SLRs came out. I figured it might be a proprietary format; 127 went to 4x4 (almost?) exclusively (and I don't know that there was ever a 4x4 folder), and 828 was all solid body after WWII; the Bantam I just got is as small as those got (the art deco Bantam Special RF folder is bigger). In a way, I was asking if there was anything I could look for that's smaller than my Baby Ikonta -- and the answer seems to be, not much if any smaller, and possibly not a quality photographic tool if it is.
My Weltini is close to being as small as a full frame 35mm rangefinder can get (it's a little thicker than an Olympus XA, but has a faster and less wide lens); my Balda Jubilette is smaller by the amount of space the RF takes up. A Vollenda 48 or Baby Ikonta (or Ensign Midget) is close to being as small as a 127 camera can get. 828 had potential, with 10 mm shorter spools and slightlyb smaller spool diameter, but the 40 mm frame with a relatively large gutter between frames constrains the width of the camera to "not much smaller than a VPK".
Yeah, there was Minox, and I've got several Minolta format 16mm cameras, but those are so small they're a serious drop risk as one's hands get older -- and they're also too small to reliably stay in a pocket that isn't so tight as to cause excessive wear on the camera (not to mention pockets are full of dust and lint -- folders do a better job protecting their lens from this stuff than subminis, in my experience).