A new generation of lenses designed for 2/3", 1/2" and 1/3" cameras incorporating CS-mounts. The distance from the flange surface to the focal point is 12.5mm. CS mount lenses cannot be used on cameras with a C-mount configuration. These lenses are more compact and cheaper than the C-mount equivalents.
Special” C-Mount. Same physical characteristics except it places the back plane of a lens 5mm nearer to the image device. Auto Iris versions of this format are made in two main varieties. The main distinction between them is one has the electronics to control the iris in the lens and other relies on the camera to supply varying voltages to the lens.
A type of lens mount that has a flange back distance of 12.5mm. "CS" mount lenses have a shorter back focal distance than "C" mount lenses.
New standard lens mounting format
The new industry standard for mounting lenses.
More recent type of mounting for CCTV Camera Lenses. Designed for 1/2", 1/3" 1/4" CCD cameras, CS-Mount is the more common lens mount used today in CCTV cameras.
is a lens mount with 12.5 mm back flange. Back flange is the distance between the lens mounting surface and the CCD chip. De-multiplexing: is the process of separating the different video, audio or data channels which were multiplexed at the source.
CCTV lenses are available in two different lens mounts. "C-mount" lenses have a flange back distance of 17.5mm vs. 12.5mm for "CS-mount" lenses. Many of today's cameras can accept either type of lens, but it is important to make sure that camera and lens are compatible and set up properly. C-mount lenses can be used on CS-mount cameras by utilizing a 5mm adapter or adjusting the camera for C-mount lenses. Because of the shorter back focal distance, CS-mount lenses can only be used on CS-mount cameras. Your picture will be out of focus if you use a CS-mount lens on a C-mount camera.