What's the difference between the monitor camera and the C/CS interface? It's a 17.5 mm, and a 12.5 mm
C-type lens and c-type camera, CS type lens and CS camera can be used together. A 5mm C/CS adapter can be used in combination with the c-type lens and the CS type camera. The CS type lens cannot be used in conjunction with the C camera.
Surveillance camera and c interface and the difference between cs interface lens and camera interface to lens focal plane (camera CCD photoelectric sensor should be located) from different c interface to the distance of 17.5 mm, cs type interface this distance is 12.5 mm.
W, T is close focus and far focus. F, N is the focus. O, C is on the aperture switch diagram, which is the adapter ring, and the camera image is basically invisible