This Computar 1" 50mm f/1.4 2MP Lens is designed for cameras with a C-Mount for use in a variety of applications. It has a fixed focal length of 16mm, and resolves an image on 1" cameras with 2MP sensors. Featuring a minimum focus distance of 11.8", the lens focuses to infinity and incorporates both lockable iris and focus rings, so you can leave the lens set up and not have to worry about either ring changing over time. The front of the lens incorporates an M40.5 filter thread.