The Canon EF-S 17-85mm f/4-5.6 IS USM Lens is a versatile, 5x zoom APS-C lens, offering a 27-136mm equivalent range. It features image stabilization (IS) and Ultrasonic Motor (USM) autofocus. Designed as an upgrade from standard 18-55mm kit lenses, it is a lightweight, all-purpose option suitable for landscapes and travel.