Sigma AF 135mm f/1.8 DG HSM Art for Sony E full-frame cameras is suitable for portraits and event reportage, including low light. The optical design uses 2 FLD and 2 SLD elements to reduce chromatic aberrations, especially near image edges outside the focus area. Super Multi-Layer Coating minimizes flare and internal reflections. A 9-blade rounded diaphragm provides smooth background blur. HSM indicates a quiet ultrasonic autofocus drive. Included: Sigma AF 135mm f/1.8 DG HSM Art Sony E lens, front cap, rear cap, 82 mm protective filter, lens hood.