HIGH PERFORMANCE: A 100-400 mm zoom lens that’s ideal for those shooting sports, action and wildlife. SHARP, HIGH-CONTRAST IMAGES: with Fluorite and Super UD (ultra-low dispersion) elements to suppress chromatic aberrations. ULTRA-SONIC MOTOR (USM): drives fast and quiet Auto Focus with optional full manual override. ZOOM TOUCH ADJUSTMENT RING: Set the amount of resistance felt when zooming the lens with this feature. AIR SHERE COATING (ASC): protects against flare, ghosting and reduces contrast - whilst shooting into the light. Compatible with all Canon DSLR cameras and EOS-M/EOS-R mirrorless cameras with an EF-EOS M/EF-EOS R Mount adapter.