The Marshall V-4304.3-2.0 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 the board cameras and some of the bullet cameras. This is a high quality lens that incorporates 4 glass elements for fine quality images. It has a fast f/2 aperture sensitive to low light levels. In addition the lens is wide and shows 56° horizontal view angle. It can close focus down to about 1.5 feet.