This lens is being designed for 1/3 CCD camera and mount is CS type .Flange back of CS-MOUNT is 12.5 MM.
Direct Drive IRIS:
This lens is not built-in amplifier for auto IRIS (Auto IRIS Control Printed Circuit Board). Iris blade on lens is being operated by DC from camera accordingly. Please use this lens with combination of camera built-in audio IRIS amplifier(DC-Iris ) or camera which can be switchable for video signal DC-Iris .
Adjustment of fixing Position:
Fixing between mount and camera must be turned right toward camera to the end tightly. Lens must be turned to opposite direction (not clockwise) and you can adjust fixing positioned on left side toward front of camera when you fix lens on camera .When you want to take lens off from camera ,you must turn lens to left direction.