The Sigma APO f/5.6 is a 400 mm telephoto lens suitable for wildlife or sports photography. With an aperture range of f/5.6-32, this Sigma camera lens allows you to capture bright photos even in low-light conditions. With 3x magnification, the Sigma APO f/5.6 shoots life-size photos of small objects. With a construction of 10 elements in 7 groups, this 400 mm telephoto lens reduces aberrations, enabling you to shoot high-quality images. Moreover, this Sigma camera lens accepts 77 mm filters to ensure protection against dust and glare.