Compact Superfast Zoom. Looking for an ultra-lightweight, superfast zoom lens to compliment your APS-C Canon RF camera? The Sigma 17-40mm f/1.8 DC Art for Canon RF could be a great fit for you! This 18.5 ounce lens runs a quick and constant f/1.8 aperture, and boasts a stunningly close 11-inch minimum focusing distance.

Sharp Imagery and Optical Performance. To eliminate flare and ghosting issues, the 17-40mm f/1.8 is graced with an optical design made up of 17 elements in 11 groups, alongside four aspherical and four Special Low Dispersion elements. Its rounded, 11-blade diaphragm helps produce sharp detail with a large, smooth bokeh when opened entirely.

For Video, Too! In addition to stellar photography, this lens is also designed with videography in mind! It sports a fast and quiet autofocus and an inner zoom mechanism with minimal focus breathing, perfect for capturing slow zoom footage.

Everything-Repellent Design. This 17-40mm Art lens is built to be on-the-go with you, through deserts, beaches, forests and more. Its dust- and splash-resistant structure helps maintain the integrity of the inner lens mechanisms, while a water- and oil-repellent coating helps avoid slips and mishaps along the way.