rain
In the late 1950s through the late 1960s I used a Rolleiflex while working as a pro photographer and then I used a Yashicamat professionally from the late 1960s through the late 1970s. I never used any kind of rain cover for my cameras. These boxes will stand a lot of abuse. I still have my Yashicamat and use it once in a while. I fact I now have two Yashicamats. The "new" one has German-made lenses. I love the camera and the quality I get from the big negatives.