This Canon L lens has a large zoom range of 28-300mm on a full frame SLR. It includes image stabilisation and USM ultrasonic autofocussing, and a minimum apeprture ranging from f3.5 to 5.6 depending on the chosen focal length. Expensive, but extremely versatile - compare prices below for genuine UK stock. The 3 stop IS allows you to achieve handheld images without camera shake at an aperture up to 3 stops smaller than you could without IS.