EF-Mount Lens/Full-Frame Format
Aperture Range: f/3.5 to f/32
Three Ultra-Low Dispersion Elements
Super Spectra Coating
1:1 Magnification, 1.6' Min. Focus
Ring-Type Ultrasonic Motor AF System
Internal Floating Focusing System
Weather-Sealed Construction
Detachable, Rotatable Tripod Collar
Rounded 8-Blade Diaphragm