A flexible zoom to benefit working in a variety of situations, the EF-S 15-85mm f/3.5-5.6 IS USM from Canon is a 24-136mm-equivalent lens designed for APS-C-format DSLRs. Ultra-Low Dispersion and aspherical elements are featured in the optical design to control color fringing, distortion, and a variety of aberrations throughout the zoom range, and a Super Spectra coating has been applied to reduce flare and ghosting for improved contrast and color fidelity. The lens also features an Optical Image Stabilizer, which minimizes the appearance of camera shake by four stops to better enable shooting handheld in difficult lighting conditions. Additionally, a ring-type Ultrasonic Motor is featured, too, which affords quick, quiet autofocus performance along with full-time manual focus override.