This compact telephoto zoom lens offers a high zoom ratio of approximately 7.5 times, covering the focal length range equivalent to 27.5mm wide angle to 207mm telephoto in 35mm format, simplified weather-resistant construction and extra-smooth autofocus operation using a built-in motor. An aspherical lens element helps to compensate for spherical aberration to maximize image quality and PENTAX Super Protect (SP) coating helps repel dust, water, and grease, making the lens easier to clean. The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.