Sigma 17-40mm F/1.8 DC Art Lens

Sigma 17-40mm F/1.8 DC Art Lens

In The Box

• Sigma 17-40mm F/1.8 DC Art Lens
• LCF-67 IV Lens Cap (67mm)
• LCR III Rear Lens Cap for L-Mount
• Lens Hood
• Carrying Pouch

Sigma 17-40mm F/1.8 DC Art Lens

The Sigma 17-40mm F1.8 DC | Art is a high-performance wide-to-standard zoom lens designed for APS-C mirrorless camera systems (Fujifilm X, Sony E, Canon RF, L-Mount) offering a constant f/1.8 maximum aperture throughout the zoom range.
It features 17 elements in 11 groups (including 4 SLD and 4 aspherical elements) to provide optical quality comparable to a prime lens, even at the wide-open f/1.8 setting.
The lens also incorporates video-friendly features: an inner zoom mechanism (length remains constant while zooming), minimal focus-breathing, linear actuator autofocus and dust & splash-resistant construction with water/oil-repellent coating on the front element.
With a focal length range of 17-40mm on APS-C, this equates to roughly ~25.5-60mm equivalent (depending on the mount) for full-frame—making it extremely versatile for everything from wide-angle environmental shooting to portrait-friendly mid-range.

Key Features

• Constant f/1.8 maximum aperture across the zoom range — excellent for low-light situations and shallow depth of field.
• Wide-to-standard zoom (17-40mm for APS-C) offers flexibility without changing lenses.
• Advanced optical design: 17 elements / 11 groups including 4 SLD and 4 aspherical elements for high resolution and minimized aberrations.
• Inner zoom mechanism: lens length remains constant when zooming — beneficial for gimbals, video work, stability.
• Video-friendly build: minimal focus breathing, linear autofocus motor, dust & splash resistance, water/oil-repellent front element.
• Filter thread of φ67 mm (a standard size) which makes filter use more convenient.
• Lightweight and compact for its class (~535g for L-Mount version) with good handling for travel, run-and-gun video, and everyday shooting.

Best Suitable

• APS-C mirrorless system users (Fujifilm X, Sony E, Canon RF, L-Mount) looking for a professional-level zoom lens with superb optical performance and a fast aperture.
• Hybrid stills/video creators who benefit from the bright aperture, inner zoom design, minimal focus breathing and robust build for motion workflows.
• Photographers who want one lens to cover wide to normal field of view (equivalent ~25–60mm) with prime-like rendering and low-light capability.
• Travel, event, street, everyday shooting where versatility, speed, build quality and one-lens convenience matter.

FAQ – Sigma 17-40mm F/1.8 DC Art Lens

Is this lens designed for full-frame cameras?

No, the “DC” designation means the lens is optimized for APS-C format mirrorless cameras. Using it on full-frame bodies will likely require the camera to operate in crop mode or you may get heavy vignetting.

Does it lighten up the aperture compared to typical zooms?

Yes, most standard zooms for APS-C or full-frame might have constant f/2.8 or variable apertures. This lens’s f/1.8 is significantly brighter, offering better shallow depth of field and improved low-light performance.

Does it have optical image stabilization (OIS)?

No, there is no image stabilization built into the lens. Users relying on stabilization will depend on camera body IBIS (if available) or external support.

What mounts are available?

The lens is available in Fujifilm X mount, Sony E mount, L-Mount, and Canon RF mount.

What about where the lens performs best and any known compromises?

It performs superbly in optical quality and speed for its class. Being a large-aperture zoom, it is slightly heavier (~535g) and may be larger than typical kit zooms, so consideration should be given to portability. Also, as newer optics it may cost more. But for users who prioritize image quality and constant f/1.8, it is a top choice.

Specifications