F Mount Lens/FX Format Aperture Range: f/2.8 to 32 1:1 Magnification Ratio; Macro Close-Ups One ED Glass and Two Aspherical Elements Nano Crystal & Super Integrated Coating Silent Wave Motor AF System Internal Focus; Manual Focus Override Minimum Focus Distance: 7.3″ Filter Diameter: 62mm Rounded 9-Blade Diaphragm