Product weight - 645g / Filter diameter (mm) - 77 / Max. diameter x length (mm) - 83.5 x 110.6 / AF actuator - Ring USM / Lens construction (elements/groups) - 19/12 / Minimum aperture - 22 / Angle of view (horzntl, vertl, diagnl) - 48� - 15� 40', 68� 40' - 23� 20', 78� 30' - 27� 50' / Maximum magnification (x) - 0.17 (at 55mm) / Magnification - Extension Tube EF12 II - 0.45-0.23_ / Magnification - Extension Tube EF25 II - 1.71-0.51 / No. of diaphragm blades - 7 / Closest focusing distance (m) - 0.35 / Distance information - Yes / Image stabilizer - 3-stops / 35mm film equivalent focal length - 27-88
