Patent ID: 8745609

Claim:
An imaging system, comprising: a lens unit including an imaging device which converts an optical image representing an object into image data by an imaging unit; a main body unit which holds the lens unit in such a manner that the lens unit is attachable to and detachable from the main body unit; and a controller configured to exchange an integrated firmware between the lens unit and the main body unit via a communication device, the integrated firmware integrating at least one firmware of the lens unit and at least one firmware of the main body unit, compare, via a compatibility table included in the integrated firmware, a version number held in unit information exchanged between the lens unit and the main body unit to an upper and lower limit of a version number of a unit corresponding to the unit information, and to upgrade, in response to at least one of the version number being lower than the lower limit and the version number being higher than the upper limit, at least one of the firmwares of the lens unit or main body unit with a corresponding firmware in the integrated firmware to obtain a compatible combination of firmware of the main body unit and lens unit.