Television camera apparatus having automatic gain-selecting unit

摘要

A television camera is provided with an automatic gain selecting unit which is responsive to the iris value of the lens attached to the camera. The automatic gain selecting unit includes a comparator for determining when the camera lens-iris operates within a medium "window" range, a counter for counting upwardly or downwardly when the lens-iris operates outside of the window range, and a decoder for outputting a control signal to a gain selecting amplifier to adjust the gain thereof, in response to the operation of the counter.