Patent attributes
An external program supplied from an external unit in order to process an image sensed by a camera is prevented from causing a malfunction in the camera. An external program supplied by an personal computer is stored in an EEPROM of the camera. The external program contains version information giving the version of the camera that is capable of using the external program, the name of the program for control, and parameter information corresponding to the program name. A CPU compares each of these items of information with corresponding information that has been set in the camera, thereby determining whether the external program is capable of being used. If the external program cannot be used by the camera, a warning display is presented on a display unit.
