Sigma 17-40mm f/1.8 DC Art Lens for Canon RF mount

The Sigma 17-40mm f1.8 DC Art for Canon RF Mount is a premium APS-C zoom lens offering a constant f1.8 aperture across the entire focal length. Its advanced optical design features 17 elements in 11 groups, including four SLD and four aspherical elements for precise correction of aberrations. With an internal zoom, HLA linear autofocus, and a Canon-style control ring, it is ideal for hybrid photo and video use.

Highlights of the Sigma 17-40mm f1.8 DC Art Lens:

• Standard zoom lens for APS-C Canon RF Mount with a constant f1.8 aperture
• 17 elements in 11 groups, with four SLD and four aspherical elements
• High-response linear actuator (HLA) for fast and quiet autofocus
• Inner zoom mechanism maintains lens length while zooming or focusing
• Minimal focus breathing for smooth video focus transitions
• Control ring for exposure adjustment or custom functions
• Super Multi-Layer Coating to reduce flare and ghosting
• Minimum focusing distance of 28cm at all focal lengths
• Maximum magnification ratio of 1:4.8 at the 40mm end
• Water- and oil-repellent coating on the front element
• Dust- and splash-resistant construction for outdoor use
• 67mm filter thread supports a range of filters for creative shots
• Weighs just 535g and measures 115.9mm in length