Imaging device

The present invention addresses the problem that when carrying out bulb exposure or long exposure, an energizing member must be continuously maintained in a charged state for a long time, causing an increase in the amount of power consumed by the imaging device. In this imaging device, even when a prescribed amount of time has elapsed since a first operation is carried out, if a second operation is not carried out, a control means drives a motor in a second direction such that a cam member is driven until the charge of an energizing member is released via the energizing force of the energizing member and the driving force of the motor, the driving of the motor by the control means is stopped, and, on the basis of the second operation, the control means drives the motor in the second direction such that the cam member is driven by the driving force of the motor and an engagement part drives a first section, whereafter the control means drives the motor in the second direction such that the engagement part driv