Focal length: 80mm ~ 400mm Picture angle: 30° 10' ~ 6° 10' with film (F-series) SLRs, 20° ~ 4° with digital (D-series) SLRs Zoom ratio: 5x Maximum aperture: f/4.5-5.6 Minimum aperture marked on scale: f/32 Lens construction: 17 elements in 11 groups; 3 ED glass elements Minimum focus distance: 2.3m (90.5 inches) Maximum reproduction ratio: 1:4.8 Filter attachment size: 77mm Overall dimensions: (approx.) 91mm diameter x 171mm long (3.58" x 6.73") Extension from the lens mount: (approx.) 171mm (6.73") Weight: (approx.) 1340g (2.95lb) 1210g without tripod mounting foot Hood: HB-24 (supplied) Usable teleconverters: TC-201 or TC-14A (Usable, but there is occasional vignetting)