TheSigma 300-600mm f/4 DG OS | Sports Lens is a revolutionary large-aperture ultra-telephoto zoom lens that delivers all the convenience and versatility of a zoom lens with the superior optical performance of an ultra-telephoto prime lens.
Despite its large aperture of f/4, the Sigma 300-600mm f/4 DG OS | Sports features a lightweight focus lens group thanks to the use of a high-thrust HLA motor, optimized optical power arrangement, and state-of-the-art glass materials.
