KamKorda Lens Filter Kit 77mm + EF 100 400mm f/4.5 5.6L IS II USM Camera Lens, Aperture Range: to f/38, Air Sphere Coating, Detachable, Rotatable Tripod Collar 2 Year Warranty

EF Mount L-Series Lens/Full-Frame Format One Fluorite and One Super UD Element Air Sphere and Fluorine Lens Coatings Ring-Type USM AF Motor, Internal Focus Optical Image Stabilizer with 3 Modes