EF-Mount Lens/Full-Frame FormatAperture Range: f/2.8 to f/32One Ultra-Low Dispersion ElementSuper Spectra Coating1:1 Magnification, 11.8" Min. FocusRing-Type Ultrasonic Motor AF SystemFocus Range LimiterOptical Image StabilizerWeather-Sealed ConstructionRounded 9-Blade DiaphragmIn the BoxCanon EF 10..