Exchangeable connecting device between video camera and automatic iris lens

An exchangeable connecting device between a video camera (M5), such as a CCD (Charged Couple Device) camera, an area image sensor and an automatic iris lens;

• in said video camera (M5) one video control signal (1) as an amplified output of a light sensor is directly connected to an analogue switch (t), while the other is connected through a galvanometer control circuit (p) to an analogue switch (t), said analogue switch (t) being connected to one common connector (k);
• when a video signal control type automatic iris lens (L1) is connected to said one common connector (k), said video control signal (1) amplified output of a light sensor is directly connected to said analogue switch (t) and said one common connector (k);
• when a DC control type automatic iris lens L2 is connected, said analogue switch (t) is switched and said video control signal (1) is amplified by said galvanometer control circuit (p) so that the output of said light sensor is connected to said common connector (k) as a control current (2) of said galvanometer (f) corresponding to a video signal (IVpp).