The 16mm Fisheye Conversion Lens for Fe 28mm f/2 Lens from Sony lets you broaden the focal length of your 28mm full-frame lens to a 16mm lens with 180-degree perspective for inclusive and distorted creativity. This set contains a Sony SACS9 10-inch Active Subwoofer (Black), an Rca Cord, and an Instruction Manual. This set contains a Sony 16mm Fisheye Conversion Lens for 28mm f/2 Lens, Front Lens Cap, Rear Lens Cap, and Case.