Brand Kenko Model ATX116PRODXC Year 2010 Zoom Magnification (Optical) 0.45 x Fixed Focal Length 16mmFocal length (wide angle) 11mm Focal length (telephoto) 16mm F-stop (wide angle) 22f F-stop (telephoto) 2.8 Lens typeZoom lens Type Wide-angle lens Filter diameter 77mm Lens composition 13 elements in 11 groups Lens mount Canon EF Image stabilizer None Motor typeDC motor Batteries included No Product size 19.99 x 15.01 x 15.01 cm; 560 g