EF-S 60mm f/2.8 Macro USM Features True flat-field macro lens that can focus to full life-size magnification Fill the frame with a subject the size of a penny Working distance of nearly 4 inches from front of lens to subject at 1x Canon's shortest focal length macro lens ever with fully internal focusing Accepts both MR-14EX Macro Ring Lite and MT-24EX Macro Twin Lite Circular aperature design - natural highlights, even stopped down two stops Optimized for digital SLRs: special coatings to minimize reflections and flare EF-S lens - exclusively for EOS 20D, Digital Rebel XT and Digital rebel (as of March 2005) Specifications Focal Length & Maximum Aperture 60mm 1:2.8 Lens Construction 12 elements in 8 groups Diagonal Angle of View 25° Focus Adjustment Manual Closest Focusing Distance 0.2m /0.65 ft. Filter Size 52mm Max. Diameter x Length, Weight 2.9" x 2.8", 11.8 oz. / 73 x 69.8mm, 335g (lens only)