Computar T3Z2910CS-IR 1/3" 2.9-8.2mm F1.0 Varifocal Manual Iris (CS Mount) Day/Night IR

T3Z2910CS-IR 1/3" 2.9-8.2mm f1.0 Varifocal, Manual Iris (CS Mount) Day/Night IR Computar Varifocal IR (infrared) manual iris lenses 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. CERTIFICATIONS