| 摘要 |
<p>A video camera apparatus to which a lens unit (LS) is detachably mounted is disclosed. This video camera apparatus includes a camera unit (CM) having an exposure control circuit for producing an exposure control signal from an image pickup (3) signal and transmitting it to a utilization device, a lens unit used as utilization device and having an iris control circuit (21) for producing an iris control signal based on the exposure control signal provided by the exposure control circuit (10) and a signal indicative of diaphragm condition (30) of an iris, and a data communication channel (20) for communicating a plurality of signals including the exposure control signal in a given cycle between the camera unit and the lens unit. The iris control circuit is so configured as to control the iris by use of the iris control signal obtained by dividing the exposure control signal transmitted from the camera unit into a given number of times within a one communication duration.</p> |
