The DM-TM-308VF TAMRON security camera lens provides a standard angle, by using a precise crafted vari-focal 3.0mm to 8.0mm, which gives great flexibility for your security installations. With manual-iris, this lens can be adjusted to the perfect setting for your lighting conditions. The DM-TM-358VF provides a F1.0 ultra bright aperture to help you to get a better and cleaner picture quality. Grate solution for any surveillance CCTV install