PURPOSE: To perform normal extending operation by making resetting operation of a stepping type lens barrel driving mechanism before photographing and thereby releasing abnormal state even when the lens barrel is not in a regular initial state due to a shock etc.

CONSTITUTION: When a current is applied to the coil 26 of a plunger 25, the plunger 25 is attracted and moved to the left and turns a reset lever 22 clockwise. A feeding claw 15 and a stopping claw 19 are turned to a position where they do not coupled with a cam ring 17. Even if the cam ring is in fed state, the cam ring 17 is returned to regular initial position, and normal photographing operation is executed. When the current to the plunger 25 is cut off, the reset lever 22, feeding claw 15 and stopping claw 19 are returned to initial positions by the energizing force of springs 24, 16, 21. Then, the current for lens barrel driving is applied to a rotor 1, and shifted to lens barrel extending operation.