1. An image sensing apparatus comprising: a setting unit configured to set one of a plurality of image sensing modes; an image sensing unit configured to perform an image sensing process based on the image sensing mode set by said setting unit, the image sensing processing including a plurality of processes; a communication unit configured to communicate with an external apparatus; and a determination unit configured to determine, based on the image sensing mode set by said setting unit, a process to be performed by the external apparatus out of the plurality of processes, wherein said communication unit transmits image data obtained by said image sensing unit to the external apparatus so that the process determined by said determination unit is performed by the external apparatus.