Focal length: 80mm to 400mm Maximum aperture: f/4.5 to f/5.6 Lens construction: 17 elements in 11 groups (three ED glass elements) Focus distance: 2.3m/7.5ft. to infinity Maximum reproduction ratio: 1/4.8 Focal length scale: 80mm, 105mm, 135mm, 200mm, 300mm, 400mm Zoom control: via zoom ring Aperture scale: f/4.5 to f/32 Attachment size: 77mm Lens hood: HB-24 (supplied with product) Dimensions: Approx. 91mm dia. x 171mm or 3.6 in. dia x 6.7 in. Weight: Approx. 1,340g/47.3 oz. (1,210g/42.7 oz. without tripod mounting foot)