Computar Monofocal 2/3-inch 8.5mm f1.3 with Iris & Focus

The M8513 from Computar is a Monofocal lens that's an economical choice providing fixed focal lengths from super wide angle to telephoto depending on the camera format and intended application. All are C-Mount, comprised of all glass optics, come with locking setscrews and a durable metal barrel and mount, and are covered by a three year warranty.