Canon EF 70-200mm f/4.0L USM Telephoto Zoom Camera Lens Features:
Compatible with Canon EOS Digital and 35mm SLR Cameras.
High performance, L-series telephoto zoom lens combining light weight and compactness with an f/4 maximum aperture.
Inner focusing and the ring USM enable quick and quiet auto focusing. Also, a circular polarizing filter can be attached and used without difficulty because the front lens element does not rotate during focusing. The tripod collar (sold separately) is the same one used with the EF300mm f/4L USM.