Canon EF 100-400mm f/4.5-5.6L IS II USM Lens

EF-Mount Lens/Full-Frame Format Aperture Range: f/4.5 to f/38 One Fluorite and One Super UD Element Air Sphere Coating Ring-Type Ultrasonic Motor AF System Optical Image Stabilizer Rotating Zoom Ring & Torque Adjustment Weather-Sealed Design, Fluorine Coating Detachable, Rotatable Tripod Collar Rounded 9-Blade Diaphragm