foregoing embodiment in fig1 a slider 63 of the above described start switch rides on an arcuate stripe of copper foil 64a on a substrate 64 when the lid 4 is fully open as shown in the drawing the slider 63 lies beyond the copper foil stripe 64a but when the lid 4 is slightly moved toward the closing position the slider 63 contacts with it these parts or the slider 63 and the copper foil stripe 64a are electrically connected to a control circuit to be described below fig1 in block diagram shows a corresponding control circuit of this embodiment to that of fig1 of the foregoing embodiment a start switch 103 39 has the same function as that of the start switch 103 of the foregoing embodiment but is different from the latter in that it is closed when the slider 63 and the copper foil stripe 64a of fig1 contact with each other reference numeral 114 represents a cartridge detection switch for detecting when the cartridge p has been seated in the cartridge chamber 8c 115 is a publicly known rewind control circuit for controlling the rewinding of the film when the start switch 103 39 is closed under the conditions that the cartridge detection switch 114 detects that the cartridge p has been seated in the chamber 8c and the the inverter 105 produces the output representing that the film leader detection switch 104 is in 34 off 34 state or when the stretch detection circuit 107 has detected occurrence of a stretching it produces an output signal which is applied to.