Product Id: 21581412
Description: Canon EF - Lens - 100 mm - f/2.0 USM - Canon EF - for EOS 1000, 1D, 50, 500, 5D, 7D, Kiss F, Kiss X2, Kiss X3, Rebel T1i, Rebel XS, Rebel XSi
Mfr Part #: 2518A003
Despite the large maximum aperture, the lens remains compact. Lens group 5 moves for rear focusing, and sharp, crisp pictures are obtained at all apertures. The background blur is ideal for portraits. The USM autofocuses the lens quickly and quietly.