Computar 1/3-inch 8.5-40mm f1.3 Varifocal, Manual Iris

The T5Z8513CS-IR from GANZ is a Computar Varifocal IR (infrared) manual iris lens, they are designed for use with Day/Night cameras. They eliminate focus shift in night mode, especially in the presence of IR lighting. All lenses are CS-Mount, comprised of all glass optics, come with locking set screws and a durable metal barrel and mount, and are covered by a three year warranty.