"Excellent addition to your Canon dSLR"4.5 starson by rsc8989
Pros: Very fast AF!
Summary: Very nice supplement to Canon dSLR - if you need a mid-range zoom lens to cover intermediate objects when taking digital photos, this offers both the speed and excellent image qualities in bright outdoor. Fast and accurate AF when using with a Digital Rebel XT, consistently getting a fast focus under both AI Servo and AI One Shot mode. Probably the best value for the buck if you want a mid-range USM lens covering between 55mm and 200mm.