The Sigma 17-40mm F1.8 DC Art is an APS-C wide-to-standard zoom for Canon RF-S mirrorless with a constant F1.8 aperture — one of the brightest zooms for APS-C systems — featuring 17 elements in 13 groups. It uses a high-speed linear AF motor. The lens belongs to Sigma's Global Vision Art line.
Product released: September 12, 2024
Latest firmware version
Version 1.0.1, released October 23, 2025
What's new in version 1.0.1
・Improved the in-body image stabilization effect when the lens is attached to the camera.