19 lens elements in 11 groups, including a Phase Fresnel (PF) element and three extra-low dispersion elements.The minimum focus distance is 9.84 feet (3 meters), which results in 0.18x maximum magnification.Silent Wave Motor autofocus with full-time manual focus override.Electromagnetic aperture mechanism for better exposure stability during continuous shooting.Vibration Reduction is rated for up to four stops of shake reduction. Weather-resistant construction, including a rubber gasket at the mount.Fluorine coated front element for protection against the elements.The maximum diameter is 4.17 inches (106 millimeters) and the length is 9.33 in.
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