The mega-pixel lenses are suitable for sensors with a resolution of 720p or more. Tamron's extensive line-up of fixed-focal lenses are ideal for machine vision, factory automation, and surveillance applications. Ø17.5mm/Ø13.0mm effective diameter (front/rear lens) and 0.15m minimum object distance. 11.54mm (in air) back focus and M30.5 P=0.5 filter size.