 "Canon EF zoom lens 70-200mm" " Canon 70-200mm - 2578A002 Camera & Camcorder Lenses CDW.com
"High-performance, L-series telephoto zoom lens combining lightweight and compactness with an f/4 maximum aperture. Inner focusing and the ring USM enable quick and quiet autofocusing. 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 EF 300mm f/4L USM." 
 "Canon EF 17-40mm f/4L USM Lens"@en Lens - Fumfie.com"@en