4 aspherical lenses and 3 ED (extra low dispersion) lenses minimize aberrations for high edge-to-edge image quality across the zoom range. Angle of view (35mm) 84° - 23° Versatile solution for varied photographic use over a focal range from 24 to 105mm Fast, accurate, quiet autofocus coupled with the constant F4 aperture ideal for photos and videos Professional and reliable ergonomics with precise manual focus and a customizable focus lock button Lens Hood, Front Lens Cover, Rear Lens Cover NOTE If the lens is not properly attached, the connection points that allow communication between the camera body and the lens do not contact each other. Do not press the release button on the lens, but turn the lens clockwise and attach it to the camera body until it clicks