1/3", 2.8-12 mm, F1.4, Manual Iris, CS Mount Vari-Focal Lens

The Costar CLS2812M is a manual iris lens is made of high index optical glass elements which produce a rich and razor sharp image. Specifically designed to use with 1/3" CCD high-resolution cameras, these lenses are available in a manually adjustable focal length. In most cases manual iris lenses are normally used for internal applications where the light level remains constant.