I just got a folder and I'll be sure to take the extra precautions, but is it bad to change the shutter speed after cocking the shutter on non folding cameras as well?
I'm sure there are exceptions, but yes you should change the speed before you cock the shutter. Folder doesn't have anything to do with it. In general folders are usually 50 years or more old. Mine is 72 years old. Bessa III is an exception and current. Older mechanism can easily be more fragile due to metal fatigue, abuse, dried lubricant, out of adjustment.
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