Zoom lens is compact

Compact X6 optical tracking, nonbrowning zoom lens (192-000) utilizes glass that can withstand long-term exposure to high levels of radiation (up to a total dose of 108 rads) and temperature (55°C) without discoloration. Operating at f/1.8 for most focal lengths, the lens provides high image resolution and minimum geometric distortion from 400 to 750 nm. It is for use with single-chip 1/2- and 2/3-in. CCTV cameras, as well as Newvicon and Chalnicon tubes, in a variety of monitoring applications. Using a telescopic focusing mount, the lens can image objects from 800 mm to infinity without using add-on adapters.
Resolve Optics
Chesham, UK
www.resolveoptics.com