Canon EF 75-300mm f/4-5.6 III USM Ultrasonic Zoom Lens for-Canon Digital Cameras
Canon EF 75-300mm 1:4-5.6 III USM Ultrasonic ZoomLens For- Canon EOS DSLR. Has an ultrasonic motor, so provides faster auto focus than canon's standard 75-300mm lens. Ultrasonic Silent Motor for superb, fast auto focus action.