The Panasonic Lumix S 2.0x Teleconverter teleconverter can be attached to the LUMIX S PRO 70-200mm F4 O.I.S. (SR70200)*1, enabling the use of the lens as a super telephoto lens with its extended zoom range of maximum 400mm with high-speed, high-precision AF. The rugged dust/splash-resistant*2 design withstands use under harsh conditions even in -10 degrees Celsius for high mobility.