About this item

• Focal length: 100mm, Closest focusing distance : 1 foot (film plane to subject)
• Secondary diaphragm blocks stray light at f/2.8 for increased contrast, Ultra-sonic monitor provides outstanding autofocusing speed at all distances
• 3-group floating system for exceptional close-up performance
• 100mm macro USM lens with f/2.8 maximum aperture for Canon SLR cameras
• full-time manual focus