| 摘要 |
A camera system with interchangeable lens, consisting of a camera unit and a lens unit detachably mountable on the camera unit, comprising a target value setting circuit for setting a target control value of a diaphragm provided in the lens unit, a correction circuit for generating a correction signal for varying the content of the target value setting circuit, a diaphragm state detection circuit for detecting the diaphragm information, a first control circuit for varying the set value of the target value setting circuit, based on the correction signal, a diaphragm drive circuit for driving the diaphragm according the result of comparison of the output of the diaphragm state detection circuit and the value of the target value setting circuit, a memory circuit for storing the information specific to each lens unit, and a second control circuit for generating, at the detaching and mounting of the lens unit, a command for controlling the value of the target value setting circuit for bringing the diaphragm to a predetermined state, by referring to the content of the memory circuit.
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