The S-mount is a standard lens mount used in various surveillance CCTV cameras and webcams. It uses a male metric M12 thread with 0.5 mm pitch on the lens and a corresponding female thread on the lens

A lens board is a stiff, opaque board with a hole in the center, onto which a lens is mounted, so that the lens can be attached easily to the front of a view camera or to the bottom of a photographic