The Canon EF70-200mm f/4L IS USM lens is a lightweight, compact, high-performance telephoto zoom lens with image stabilization, designed for use with Canon EOS cameras. The lens features an image stabilizer with a effect equivalent to a four-stop faster shutter speed*, and has a second image stabilization mode that is well-suited to tracking moving subjects. The lens also features fluorite and UD lens elements to produce sharp, high-contrast images. Additionally, the lens is equipped with a USM (Ultrasonic Motor) for fast and quiet autofocus.