The FUJINON XF100-400mm F4.5-5.6 R LM OIS WR is a weather-sealed, superior telephoto lens that gives photographers exceptionally sharp images with a 152-609mm equivalent in 35mm format. The high-performance XF100-400mm F4.5-5.6 R LM OIS WR has an optical construction of 21 elements in 14 groups, and includes five ED lenses and one Super ED lens to help reduce chromatic aberration that often occurs in telephoto lenses. As a result, it delivers impressive, professional image quality. Uses 21 elements in 14 groups, and 5 extra-low dispersion elements and 1 super extra low dispersion elements Weather-sealed with 13 water and dust resistant seals at 12 points Included lens hood features a sliding window for accessing a polarizing filter and locking mechanism Compatible with the XF1.4x TC WR teleconverter (140-560mm F6.3-8 or 213-853mm in 35mm equivalent) The XF100-400mm F4.5-5.6 R LM OIS WR has been designed for handheld shooting with a 5.0-stop image stabilization system and twin linear motors for speedy autofocus that makes it perfect for shooting fast-moving subjects. The lens is also water and dust resistant and can operate in temperatures as low as 14-degrees F (-10-degrees C), making it suitable for use in a wide range of outdoor shooting conditions. A fluorine coating has also been applied to the front lens element to repel water and dirt, adding to the toughness and functionality of the lens. Reduced chromatic aberr