Why is it that you can still buy 120 film from any decent photographic shop and yet 620 is practically impossible to get hold of (the only place I know of is Photo Supplies UK)? As far as I can see it would have been logical to keep 620 in production and stop 120, since 620 fits in all 120 cameras (that I have seen) and yet 120 fits in hardly any 620 cameras.
620 seems to have been discontinued for
many years, other than the small-scale re-spooling by enthusiasts like Photo-Supplies UK.
I'm not sure that 620 will fit in all 120 cameras, certainly none of the 120 cameras which I have had would take it, so far a I remember. The film and backing paper is the same, but the spool and flange of the 620 is much narrower.
Part of the reason may be that most 620 cameras were at the less expensive end of the market, while enthusiast and professional cameras seemed (and still are) to be 120 (thinking of Rolleflex, Hasselblad, Mamiya, Pentax, etc.).
I'm not actually sure why 620 was produced, other than the slimmer spool (and hence slightly smaller packaging)...anyone know?