Highlights EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/32 One Ultra-Low Dispersion Element Super Spectra Coating 1:1 Magnification, 1' Min. Focus Ring-Type Ultrasonic Motor AF System Internal Floating Focusing System Focus Range Limiter Rounded 8-Blade Diaphragm Features Optimized for close-up shooting, the EF 100mm f/2.8 Macro USM from Canon mixes a comfortable short telephoto focal length with a short working distance. As a macro lens, first and foremost, this lens affords a life-size, 1:1 maximum magnification along with a 1' minimum focusing distance and the 100mm focal length is also well-suited for portraiture and other mid-length subjects. Benefitting image quality, one ultra-low dispersion element is featured, which limits color fringing and chromatic aberrations for high clarity, and a Super Spectra coating is also applied to suppress flare and ghosting for improved contrast. A three-group internal floating focusing system is also used to maintain image quality throughout the entire focus range and an Ultrasonic Motor provides quick and quiet autofocus performance, along with full-time manual focus control. Short telephoto prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 160mm equivalent focal length. Ideal for macro shooting, this lens offers a life-size 1:1 maximum magnification along with a minimum focusing distance of 1' to suit working with close-up subjects. One ultra-low dispe