Is it necessary to only turn the shutter speed dial in one direction?
There doesn’t seem to be a definitive answer to this question. Some people seem to say that one should only change the camera’s shutter speeds by rotating the dial clockwise… but others (myself included) regularly change shutter speeds by rotating the dial in either direction without any problems. Note: A version of Hartblei’s mirror lock-up function (Studio Master version) required that users ONLY change shutter speeds by rotating the dial clockwise. Rotating the knob counterclockwise would break the camera. Hartblei has now discontinued this model.