The Fujinon HA13x4.5DERM-M is a 2/3" lens with 13x optical zoom. The lens comes with a 2x extender for instant telephoto. Known for their high build quality and precision optics, Fujinon lenses have become the industry standard for professional video applications all over the world. This lens will not only resolve images for high-definition acquisition, it's also equipped with a wide array of extra features such as QuickZoom and VFormat technology. Quickzoom makes it easy to verify focus by allowing instant telephoto zoom capability, while VFormat holds angle of view when in 4:3 aspect ratio mode.