EF-Mount Lens/Full-Frame Format
Aperture Range: f/2.8 to 22
Three Aspherical & Two UD Elements
Subwavelength & Air Sphere Coatings
Ring-Type Ultrasonic Motor AF System
Internal Focus; Full-Time MF Override
Fluorine Coating on Exposed Elements
Dust- and Water-Resistant Construction
Rounded 9-Blade Diaphragm