A camera includes a plurality of camera operation mechanisms, a sun gear which rotates by means of a motor, a planetary gear which revolves around the sun gear, and a plurality of output gears each capable of meshing with the planetary gear by means of revolution of the planetary gear. The plurality of output gears transmit power to the plurality of camera operation mechanisms, respectively. A holding member is switchable from a first state, in which the planetary gear is allowed to revolve freely, to a second state, in which the planetary gear is held at a revolution position where the planetary gear is in mesh with one of the plurality of output gears. A controller causes the planetary gear to revolve so as to mesh with a selected one of the plurality of output gears, and switches the holding member from the first state to the second state, after completion of a power transmitting operation.