- One fluorite element & five ud elements
- Internal focus, focus range limiter
- Weather-sealed design, fluorine coating
- Air sphere coating
- 3.5-stop is
EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/32 One Fluorite Element & Five UD Elements Air Sphere Coating Ring-Type Ultrasonic Motor AF System Optical Image Stabilizer Internal Focus, Focus Range Limiter Weather-Sealed Design, Fluorine Coating Detachable, Rotatable Tripod Collar Rounded 8-Blade Diaphragm