EF-Mount L-Series Lens/Full-Frame Format Aperture Range: f/4 to 22
Four GMo Aspherical Elements Air Sphere Coating
Ring-Type Ultrasonic Motor AF System Optical Image Stabilization
Internal Focus; Full-Time MF Override Zoom Lock Switch; Fluorine Coating
Dust- and Water-Resistant Construction Rounded 10-Blade Diaphragm