Sigma 100-400mm f/5-6.3 DG DN OS for full-frame Sony E-mount cameras is suitable for sports, wildlife, and moving subjects. Optical stabilization provides up to 4 stops of compensation. Optical construction: 22 elements in 16 groups, including four SLD elements made from low-dispersion glass to reduce chromatic and spherical aberrations, color fringing, distortion, and other optical anomalies. A stepper motor provides fast and quiet focusing. Included: Sigma 100-400mm f/5-6.3 DG DN OS Sony E lens, filter, lens hood, front and rear caps.