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

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

The Sigma 17‑40 mm F1.8 DC | Art for Canon RF is a groundbreaking standard zoom designed exclusively for APS‑C mirrorless cameras. Offering a constant F1.8 aperture across a broad zoom range, this lens merges prime‑level brightness and sharpness with versatile framing—ideal for photographers and videographers seeking top-tier performance in a single lens.

Optical Excellence

The lens features a precise optical formula of 17 elements in 11 groups, including four SLD and four aspherical elements. Super Multi-Layer Coating minimises ghosting and flare, while excellent correction of chromatic aberration and coma ensures sharpness even when shooting wide open at F1.8.

Bright Aperture & Bokeh

With its F1.8 maximum aperture throughout the zoom range, this lens excels in low-light scenarios and enables beautiful background blur. The 11‑blade rounded diaphragm enhances bokeh for pleasing out-of-focus areas.

Zoom Range & Handling

Covering an effective 27.2–64 mm on Canon APS‑C bodies, this lens expands upon the 18‑35 mm predecessor. It features an internal zoom design that keeps the barrel compact, stabilised, and resistant to dust.

Video & Autofocus

The HLA (High-response Linear Actuator) system delivers fast, quiet autofocus, ideal for hybrid creators. It also minimises focus breathing, making it superb for smooth video work.

Build & Practicality

Despite its bright aperture, the RF mount version weighs only 560 g and measures 72.9 × 115.9 mm. It includes dust- and splash-resistant construction and a water/oil-repellent front element. A full-featured aperture/control ring (configurable for clicks or de-clicked use) and dual AFL/custom buttons add ergonomic flexibility.

Key Specifications

• Focal Length: 17–40 mm (≈27.2–64 mm equiv. full‑frame)

• Maximum Aperture: F1.8 (constant)

• Minimum Focus: 0.28 m with a 1:4.8 magnification ratio

• Diaphragm Blades: 11 rounded

• Filter Thread: 67 mm

• Weight: 560 g

• Weather sealing: Dust- and splash-resistant, water/oil-repellent coating

Availability

The Canon RF mount version is scheduled for release in August 2025, following availability on Sony E, L, and X mounts. It delivers outstanding value for its feature set.

Conclusion

The Sigma 17‑40 mm F1.8 DC | Art for Canon RF redefines APS-C performance. Its outstanding optical quality, fast aperture, compact form, and video features make it the ultimate all-in-one lens for travel, video and creative photography.

Description
Sigma 17‑40 mm F1.8 DC | Art for Canon RF: bright standard zoom, constant F1.8, sharp optics, weather-sealed, AF/video-ready.

Codes = 4214972  , 0085126214722 , 214972

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