Product weight - 480 g / Filter diameter (mm) - 58 / Maximum diameter x length (mm) - 71 x 122 / AF Actuator - Micro Motor / Lens construction (elements/groups) - 13/9 / Minimum aperture - 32-45 / Angle of view - 27� - 6�50', 18�11' - 4�35', 32�11' - 8�15' / Magnification - 0.25 (at 300mm) / Magnification with extension tube EF12 II - 0.31-0.04 / Magnification with extension tube EF25 II - 0.39-0.09