PURPOSE: To drive an actuator by loading a battery pack on the interchangeable lens even if electric power for actuator driving can not be supplied from a camera body.
CONSTITUTION: The actuator 3 incorporated in the interchangeable lens LE is fed with electricity from a 1st power source 1 incorporated in the camera body BD through 1st camera-side terminals J11 and J18 and 1st lens-side terminals J1 and J8. Further, a control circuit incorporated to the interchangeable lens LE is fed with electricity from a 2nd power source incorporated in the camera body BD through 2nd camera-side terminals J12 and J17 and 2nd lens-side terminals J2 and J7. When the electric power for driving can not be supplied from the camera body BD to the actuator 3 of the interchangeable lens LE, the battery pack 90 is mounted on the interchangeable lens LE. The actuator 3 incorporated in the interchangeable lens LE is fed with electricity from an internal auxiliary battery E2 through electrode terminals 93a and 93b and 3rd lens-side terminals J9 and J10. Consequently, the actuator 3 can be driven.
KAMIYAMA MASAYUKI
SERITA YASUAKI
OTSUKA HIROSHI
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