Canon - Macro lens - 100 mm - f/2.8 USM - Canon EF

3-group floating system results in excellent delineation at all focusing distancesRing USM for silent and high-speed AF, and manual focus
Product DescriptionThe Canon EF 100mm f/2. 8 Macro USM Autofocus lens is suitable for macro photography up to life-size (1x) magnification. Inner focusing affords a long working distance of 5. 9 inches to infinity.

Source: Digital Camera and Video Store...