CS-Mount, C-Mount Lenses

C- and CS-mount lenses are standard equipment on many traditional CCTV cameras. The two type of lenses differ in how they are mounted. The distance from the surface where the lens comes in contact with the camera to the focal point (the "flange back") of a CS-mount lens is 12.5mm (0.492"). This is 5mm shorter than a C-mount lens.

 

Most professional cameras are CS-mount cameras and include a C-ring, so they can us a C-mount lens OR a CS-mount lens.

 

You can't use a C-mount camera with a CS-mount lens - the lens won't fit.
 

CCTV Lens Definitions

• Vari-Focal Lenses: Manually adjust focal length. Allows wide or narrow view

• Manual Iris Lenses: Use where the light conditions remain constant

• Auto Iris Lenses: Use where light conditions vary

• CS-Mount Lens: Will only fit CS-mount cameras

• Board Lens: This lens is designed for board cameras only

 

CS-Mount & C-Mount Auto Iris Lenses

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