Product weight - 1490g / Filter diameter (mm) - 77mm / Max. diameter x length (mm) - 88.8 x 199 / AF actuator - Ring USM / Lens construction (elements/groups) - 23/19 / Minimum aperture - 32 / Angle of view (horzntl, vertl, diagnl) - 29� - 10�, 19�30' - 7�, 34� -12� / Maximum magnification (x) - 0.21 (at 200mm) / Magnification - Extension Tube EF12 II - 0.28 - 0.06 / Magnification - Extension Tube EF25 II - 0.36 - 0.14 / No. of diaphragm blades - 8 / Closest focusing distance (m) - 1,2 / Distance information - Provided / Image stabilizer - 4-stops / 35mm film equivalent focal length / Dust/moisture resistance - Yes