P30T will dry fire regardless of film presence or misfeeds MZ-M - Peter Alling "I can deliberately mis-load the example of the ZX=M I own and it will fire and advance even though there is no film movement. Since this camera is based on ZX series I would bet that all other ZX/MZ cameras with the possible exception of the MZ-S will work the same way." MZ-M - Brendan "The MZ-M has the same film system as the other mz cameras, normally it won't fire if it sees a misfeed."
MZ-50 will only dry-fire with an empty film chamber, misfeeds or misloads lock the camera MZ-30 ditto MZ-5N ditto MZ-S ditto SF-1 ditto PZ-20 ditto Z1(p?) - Jostein - it will only fire with an empty film chamber Z1P - Mike - it wont fire without film Z1P - Dave Mann - Oh yes it will as long as there is an empty film chamber! 67 will dry fire with the 'frame counter trick' The Z1/Z1P and MZ-M are getting some disagreements here! But for these disagreements, I am tempted to think that all 'electronic' cameras will fire as long as the back is shut and either the chamber is empty or the film has fed successfully. Mechnical cameras don't seem to care. Just need to resolve the disagreements and see if there are any transitional cameras which wont dry fire at all. Peter Alling said that there were some which needed a cardboard insert to 'pretend' there was film loaded - any model numbers as examples? Any others?

