A marvel of optical engineering, the Fujinon XF100-400mm F4.5-5.6 R Lm Ois Wr lens is a weather-sealed, high-performance telephoto lens that delivers exceptionally sharp images across a broad focal range equivalent to 152-609mm in 35mm format. This lens is designed to produce professional-quality images, thanks to its advanced optical construction of 21 elements in 14 groups, which includes five Ed lenses and one Super Ed lens. These elements work together to significantly reduce chromatic aberration, a common issue in telephoto lenses, resulting in stunning, high-resolution images.This lens is not just about image quality it's also built for durability and versatility. With 13 water and dust resistant seals at 12 points, it's designed to withstand challenging outdoor shooting conditions.