There is disclosed a single-lens reflex camera which does not drive a
movable reflecting mirror when it enters a shooting operation while a
live view is being displayed. For example, the rotation direction of a
motor controlling the driving of shutter charge and a movable reflecting
mirror can differ between a live view state and the other states. Then, a
transmission mechanism for transmitting a driving force from the motor to
the movable mirror is configured to release its engagement between the
motor and the movable mirror when the motor rotates in a direction for
the live view state.