Product weight - 760 g / Filter diamater (mm) - 72 / Maximum diameter x length (mm) - 80.4 x 105.5 / AF Actuator - Ring USM / Lens construction (elements/groups) - 14/11 / Minimum aperture - 22 / Angle of view - 54�, 38�, 63� (horizontal, vertical, diagonal) / Magnification - 0.21 / Magnification with extension tube EF12 II - 0.58-0.36 / Magnification with extension tube EF25 II - 1.03-0.80