Sharpness across the frame stands out, thanks to 19 elements with 3 aspherical and 6 ED glass, paired with a constant f/2.8 aperture and 11-blade diaphragm. The lens is fully weather-sealed and features a fast, quiet stepping motor, ensuring reliable autofocus for both stills and video. This lens best serves astrophotography and event photographers who demand edge-to-edge detail and wide light-gathering capability in a durable build.
