Canon EF 100mm f/2.8 Macro USM Telephoto Camera Lens Features:
Compatible with Canon EOS Digital and 35mm SLR Cameras.
Entirely new optically, with a three-group floating system for exceptional close-up performance
The first lens in its class to feature inner focusing- lens length never changes, even at life size. A secondary diaphragm blocks stray light at f/2.8, increasing contrast when shooting in backlit conditions. Ultrasonic Motor provides outstanding AF speed at all focusing distances. Wide manual focusing ring with smooth action, and full-time manual focus - even in AF mode! Accepts optional Tripod Collar B (B) via Tripod Collar Adapter ring. Compatible with EF Extension Tubes EF12 and EF25 (magnifications to 1.39x with EF25). Accepts new Lens Hood ET-67 ; Macro Ring Lite ML-3/ MR-14EX connect directly to lens.