Versatile zoom range great for landscapes, portraits and travel Zoom across the full focal length without slowing the shutter speed thanks to the fixed f/2.8 aperture Enjoy quiet fast focusing with USM technology with full time manual focus override when needed Optimal flash metering on all shoots as this lens passes distance information to the cameras E-TTL II flash system Avoid camera shake and shoot in low light without a flash using the 3-stop Optical Image Stabilizer technology Reduce flare and ghosting with Super Spectra coatings on the lens Smooth highlights from a 7-bladed aperture for a more natural look and feel to your images Compatible with all Canon EOS DSLR cameras with an APS-C sensor and Canon EOS M series mirrorless cameras using the EF-EOS M Mount Adapter The 17-55mm zoom range delivers outstanding flexibility, producing high-quality images for landscape, portrait and travel photography. The f/2.8 aperture remains constant throughout the full focal length range, so y