The Luxar LX3D02812S14IR Varifocal Auto-Iris IR lenses provides a wide to standard angle using a precise crafted vari-focal length of 2.8mm to 12mm which gives you a great flexibility for your security installation. With the added feature of a DC auto-iris, these lenses can automatically adjust to the perfect setting for your lighting conditions. Using this IR-corrected lens with a Day and Night Camera, it will give sharp and well focused image at night time. The Luxar LX3D02812S14IR provides a F1.4 bright aperture to help to give a better and cleaner picture quality.