The Sigma 70-200mm f/2.8 DG DN OS (Sports) is a powerful telephoto zoom lens specifically designed for mirrorless cameras. With its impressive aperture of f/2.8 and versatile focal length range of 70-200mm, it is excellent for sports, action, and wildlife photography, as well as for portrait shots. Sigma's "Sports" series is known for outstanding optics and durability, and the Sigma 70-200mm f/2.8 DN OS is no exception. It features optical image stabilization (OS) that minimizes camera shake and ensures sharp image quality in low light conditions or when using longer shutter speeds.