I had to regulate the amount of exposures per day > in my film days across East Europe. In the late 80's = early 90's > 120 film was not readily available , for sure.
These are all 35mm -- I would take a break some afternoons , from carrying the 6X6 and heavy lens/backs and used the lighter tripod and the small Canon and a zoom.
Work about 12-14 hours a day for 2+ weeks -- had my film allocated for just enough coverage. Color /B&W -- 35 and 120
