The Sigma f/4-5.6 is a telephoto zoom lens that is suitable for sports and wildlife photography. With an aperture range of f/4-5.6, this Sigma lens allows you to control the amount of light as per your requirements. With a construction of 14 elements in 10 groups, this telephoto zoom lens reduces aberrations, thus delivering sharp and clear photos. Moreover, the multilayer coating of this Sigma lens minimizes ghosting and flaring. With a minimum focusing distance is 59.1 inches, the Sigma f/4-5.6 lens is also suitable for macro photography.