Canon EF-S 17-85mm F4-5.6 IS USM Standard Zoom Ultrasonic Lens for EOS
Ultrasonic Motor (USM): Yes, for fast and quiet autofocus. Maximum Magnification: 0.20x at 85mm. Angle of View: 78°30' - 18°25' (diagonal). Focal Length and Aperture Focal Length: 17-85mm (35mm equivalent: 27.2-136mm).