A control apparatus that controls medical imaging, includes: a communication unit configured to communicate with an imaging unit via a communication path that includes a wireless channel; an imaging control unit configured to cause the imaging unit to execute a plurality of imaging modes including a first imaging mode and a second imaging mode which obtains a larger data amount from imaging than the first imaging mode; a restricting unit configured to restrict transition of the imaging mode when a value indicating the state of communication with the imaging unit by the communication unit is smaller than a threshold; and a setting unit configured to set different threshold values for a case in which the first imaging mode transits to the second imaging mode and a case in which the second imaging mode transits to the first imaging mode.