Whether you're shooting high-intensity sports or high-energy toddlers, you can appreciate the speedy photo capture that a lens with fast autofocus delivers. That's why Canon has honed the power of their Ultrasonic Motors (USM) for use in their EF lenses.
The EF 75-300mm lens with USM delivers exceptional telephoto ability, for capture of far-off subjects, or for detailed close-ups of nearby objects. And the built-in Micro USM gives you rapid and quiet autofocus. Picture a frame-filling photograph of a distant hot-air balloon, followed by a sparkling shot of your daughter's face as she watches it — all taken in a matter of seconds. With that kind of potential, this measures up as an unusually capable lens for the price.