Product weight - 680g / Maxiumum diameter x length (mm) - 82.5 x 125 / Lens construction (groups/elements) - 12/17 / Angle of view - 107� - 63� (83� - 44� with Nikon DX format) / Number of diaphragm blades - 9 (rounded) / Minimum focus distance - 0.29 m (1.0 ft.) at a focal length of 16mm or 35mm, 0.28 m (0.9 ft.) at a focal length between 20mm and 28mm / Maximum reproduction ratio - 0.25x / Filter-attachment size - 77mm / Minimum aperture - f/22 / Maximum aperture - f/4
