The Canon EF 300mm f/2.8L IS II USM Lens is a top of the range Telephoto prime lens designed for the Advanced/Professional level DSLR user. The Canon EF 300mm f/2.8L IS II USM Lens has excellent features such as L-Series Optics, Optical Image Stabilization, Fast Ultra-Sonic Motor (USM) Autofocus, Full-time Manual Focusing Functionality, Autofocus Stop Feature, Fluorite Glass f/ Improved Image Quality, Protective Fluorine Lens Coating and a fast aperture of f/2.8. The Canon EF 300mm f/2.8L IS II USM Lens is excellent for Sport and Wildlife photography.