The Sigma 70-200mm f/2.8 DG DN OS Sports Lens is a large-aperture zoom lens for full-frame mirrorless cameras. In addition to the expressive imaging capabilities owing to the latest optical design, the lens offers a high level of performance and features that meet the expectations of professionals in both still and video, including high-speed autofocus with HLA (High-response Linear Actuator), optical stabilizer with the latest algorithm "OS2", and the superior weather resistance of Sigma's Sports line.