The FUJINON Teleconverter XF 2X TC WR is a high-performance teleconverter capable of multiplying the focal length of mounted lenses by two. It features excellent optical design with a construction of 9 elements in 5 groups to maintain the optical performance of the original lens. Also, thanks to the unified design when mounted to a compatible lens, the teleconverter is weather and dust-resistant and operates at temperatures as low as -10°C.