Sigma 17-40mm F1.8 DC | Art Lens – Canon RF Mount

Sigma 17-40mm F1.8 DC | Art Lens – Canon RF Mount

Game-Changing F1.8 Zoom for APS-C Canon RF Cameras

The Sigma 17-40mm F1.8 DC | Art for Canon RF Mount is a revolutionary large-aperture standard zoom lens designed specifically for APS-C mirrorless cameras. Combining prime-like image quality with the flexibility of a zoom, this lightweight and versatile lens is the perfect companion for photographers and video creators who demand high performance in a compact package.

This next-generation lens builds on the legacy of the iconic Sigma 18-35mm F1.8 by expanding the focal range, adding cutting-edge autofocus technology, and delivering outstanding performance for both stills and video.

Key Features at a Glance

• APS-C Standard Zoom with Constant F1.8 Aperture

• 17–40mm Range (Approx. 27.2–64mm in 35mm Format for RF)

• Prime-Level Optical Performance Across the Zoom Range

• Canon RF Mount Compatibility (APS-C Bodies Only)

• Fast, Silent Autofocus via High-response Linear Actuator (HLA)

• Stable Inner Zoom Design – Ideal for Gimbals and Rigs

• Minimal Focus Breathing for Cinematic Focus Pulls

• Custom Control Ring for Manual Adjustments

• Weather-Resistant Construction + Lightweight 535g Design

Incredible Image Quality with a Wide F1.8 Aperture

The 17-40mm F1.8 DC | Art features a complex optical design (17 elements in 11 groups, including 4 SLD and 4 aspherical elements) that delivers superb sharpness and clarity across the frame – even wide open. The fast F1.8 aperture excels in low light and allows for beautifully smooth background blur, making it ideal for portraits, events, and night scenes.

Wide and Versatile Zoom Range

Optimised for APS-C RF-mount cameras like the Canon EOS R50, R10, and R7, this lens covers a 27.2–64mm equivalent range, perfect for everything from wide-angle shots to environmental portraits. With a constant aperture and flexible framing, you can shoot without changing lenses – saving time and maintaining consistency.

Made for Motion – Video-Ready Features

The Canon RF version of the Sigma 17-40mm F1.8 is equipped with features specifically tailored for hybrid and video creators:

• Customisable control ring for smooth manual adjustments

• Minimal focus breathing ensures consistent composition while pulling focus

• Silent, fast AF thanks to the HLA motor – ideal for single-operator setups, gimbal work, and vlogging

• Inner zoom design keeps the lens size constant – perfect for balance and stability

Lightweight Yet Durable Design

Despite its fast aperture and optical complexity, this lens weighs just 535g. A smaller 67mm filter thread enhances portability, and its dust- and splash-resistant construction makes it ready for demanding shoots in challenging environments.

The water- and oil-repellent coating on the front element further improves durability and ease of cleaning in outdoor conditions.

Technical Specifications (Canon RF Mount)

• Focal Length: 17–40mm (27.2–64mm equivalent)

• Max. Aperture: F1.8 | Min. Aperture: F16

• Lens Construction: 17 elements in 11 groups

• Angle of View: 79.7°–39.1°

• Diaphragm Blades: 11 (Rounded)

• Minimum Focus Distance: 28cm

• Max. Magnification: 1:4.8 at 40mm

• Filter Thread: 67mm

• Dimensions: 72.9 x 115.9mm

• Weight: 535g

What’s in the Box

• Lens Hood (LH728-02)

• Front Cap (LCF-67 IV)

• Rear Cap (LCR III – Canon RF)

• Pouch

Compatibility & Launch Info

• Mount: Canon RF (APS-C mirrorless cameras only)

• Release Date: August 2025

• Developed and released under license from Canon Inc.

Who Is This Lens For?

• Canon RF APS-C users looking for a fast, professional zoom

• Photographers who want prime-like image quality in a zoom format

• Content creators, vloggers, and filmmakers needing minimal focus breathing and silent AF

• Anyone seeking portability, flexibility, and high-end performance in one package

Sigma 17-40mm F1.8 DC | Art – For Canon RF Creators Who Demand More

Whether you're capturing stunning stills or shooting polished video content, the Sigma 17-40mm F1.8 for Canon RF Mount offers unmatched performance, creative freedom, and exceptional image quality – all in a compact, lightweight form.