There is provided a control device including a display control unit configured to cause display of a display unit to shift between a first display mode in which a first kind of image having a predetermined relation with an electric-to-electric (EE) image acquired by an imaging unit and a second kind of image different from the first kind of image are displayed and a second display mode in which the first kind of image is not displayed and the second kind of image is displayed, and a power control unit configured to control power supply to the imaging unit in the shift between the first and second display modes.