The DM-AU-2812AVF lens gives you a wide to standard angle. Using a precise crafted vari-focal 2.8mm to 12mm, which gives you a great flexibility for your security installation. With the added feature of a DC auto-iris, this lens can automatically adjust to the perfect setting for your lighting conditions. The DM-AU-2812AVF provides a F1.4 bright aperture to help you to get a better and cleaner picture quality.