The highly anticipated SIGMA 70-200mm F2.8 DG DN OS | Sports is a reliable and lightweight DG DN F2.8 large-aperture telephoto zoom lens designed exclusively for full-frame mirrorless camera systems.\r\nCombining high-speed AF, remarkably effective OS, exceptional mechanical reliability, and superior optical performance, this high-performance lens is purpose-built to meet the rigorous demands of professional-level photographers.\r\nFeaturing high performance and reliability, a lightweight design, and a full range of features, the SIGMA 70-200mm F2.8 DG DN OS | Sports is the smart choice for photographers and videographers in a wide range of creative styles and genres including nature, wildlife, photojournalism, action sports, wedding, and portraits.\r\nDust and splash-proof construction, high-performance optical stabilizer (OS) functionality, and an inner zoom mechanism that does not change barrel length when recomposing, are all features designed for the most demanding photographic conditions. It is also the first SIGMA DN zoom lens to be equipped with an aperture ring (click/declick type).\r\nStreamlined optical design and a multi-material structure that optimally arranges magnesium and TSC have resulted in a lightweight lens body.\r\nFeaturing Dual HLA-driven floating focus for fast, accurate AF. Used to achieve high-speed AF drive.