The Marshall V-4301.9-2.0FT is one of the 4300 series of custom mount glass lenses designed for industrial applications. It comes with the 12 mm micro mount thread which can fit board cameras and some bullet cameras with the proper lens holder. This is a high quality lens that incorporates 5 glass elements and advanced coatings. It has a fast f/2.0 aperture for capturing images in lower lit scenes. In addition the lens is ultra wide and it has a MOD of about 16 inches.