Product weight - 515g / Filter diameter (mm) - 67 / Maximum diameter x length (mm) - 77.4 x 96 / Lens construction (elements/groups) - 16/12 / Minimum aperture - 22 - 38(36) / Angle of view - 64� 30' - 9� 30', 45� 30' - 6� 20', 74� 20' -11� 30' / Magnification with extension tube EF12 II - 0.43-0.09 / Magnification with extension tube EF25 II - 0.61-0.21 / Distance information - Yes