Patent ID: 8162550

Claim:
A camera apparatus to which a lens unit, with a memory storing setting information required for operating a lens and an iris mounted thereon, is attachable/detachable, and including a power cut-off function of cutting-off at least a power supply to the lens unit when a non-operation period continues for a predetermined period of time, the apparatus comprising: a communication part capable of communicating data with respect to the lens unit; a detector that monitors attachment/detachment of the lens unit, and outputs first detection information when the lens unit is detached; a controller capable of acquiring the setting information from the lens unit via the communication part and outputting second detection information when acquiring the setting information; a first storage that stores either the first detection information outputted from the detector or the second detection information outputted from the controller; and a second storage that stores the setting information when the controller acquires the setting information, wherein the controller checks detection information stored in the first storage after the power cut-off function is stopped to start a power supply to the lens unit, when the first detection information is stored in the first storage, controls so that the setting information is acquired from the lens unit mounted on the camera apparatus, and when the second detection information is stored in the first storage, controls so that the setting information is acquired from the second storage.