The iris motor can be controlled using a knob solo cabled directly to either an ENG-adapter or a broadcast camin. Alternatively, the knob solo can be used in an OB truck or control room through common fiber solutions. The broadcast camin has a built-in potentiometer for iris control / adjustment plus a lens limit function. The EXT interface allows the iris to be controlled automatically or remotely through a Hirose 12pin interface on a camera or accessory.