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.