Weighing just 454g with a constant f/2.8 aperture and 5.5-stop optical stabilization, this is Canon’s smallest and lightest full-frame RF zoom for handheld low-light shooting. The leadscrew-type STM motor delivers fast, quiet autofocus, while weather-sealing and a 0.26x magnification offer durability and close-up versatility uncommon in wide zooms. This lens is best for landscape photographers and run-and-gun video shooters who need a stabilized, ultra-portable wide-angle zoom.