The EF-S 18-135mm f/3.5-5.6 IS USM from Canon is a 28.8-216mm equivalent lens designed for APS-C-format DSLRs. Incorporating NANO USM technology, this lens is characterized by its combination of a fast, still-optimized ring-type Ultrasonic Motor and smooth, silent video-optimized stepping motor for all-around focusing performance to benefit multimedia image-makers. The lens is also compatible with the optional PZ-E1 Power Zoom Adapter for more natural and controllable zooming performance. Updated to suit the increasing presence of video in a photographer's workflow, this zoom is versatile in regard to both foci handling as well as with its wide-angle to telephoto reach. A standard zoom designed for APS-C-format Canon DSLRs, this 18-135mm lens provides a 28.8-216mm equivalent focal length range that covers wide-angle to telephoto perspectives. Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions. This focusing system also affords full-time manual focus control when working in the one-shot AF mode. A rounded seven-blade diaphragm contributes to a pleasing bokeh quality when working with selective focus and shallow depth of field techniques.