Focal length and maximum aperture: 100-300mm 1:4.5-5.6 Lens construction: 13 elements in 10 gourps Diagonal angle-of-view: 24°-8°15' Focus adjustment: ring type USM, rear focusing system, full-time manual focus Closest focusing distance: 1.5 m/ 4.9 ft. (Macro), 0.2 x magnification Zoom system: rotation type Filter size: 58mm Max. diameter x length, weight: 73 x 121.5mm, 540g
