The EF 70–200mm f/2.8L IS III USM is a high-performance lens with a constant f/2.8 maximum aperture that enhances AF performance by distributing more light to the AF sensor for greater focus accuracy. The 8-blade circular aperture facilitates the capture of images with exceptional background blur.
**PLEASE NOTE: The lens is in good physical condition with the only issue being there are minor scuffs on the tripod mount ring. The lens has been tested with a Canon Rebel XSi with the only thing noticeable is the lens makes a 'clicking' noise when it is trying to auto-stabilize. Please see photo and details.**