Sigma 17-40mm f/1.8 DC Art Lens

Sigma 17-40mm f/1.8 DC Art Lens for APS-C Mirrorless Cameras

The Sigma 17-40mm f/1.8 DC Art Lens is an uncompromising masterpiece for APS-C mirrorless shooters who crave professional-grade performance without the bulk or price tag of full-frame systems. Designed for creators who demand both speed and versatility, this groundbreaking lens boasts an unprecedented constant f/1.8 aperture—the first and only of its kind for APS-C zooms—delivering exceptional light-gathering power across the entire focal range. From immersive 17mm wide-angle landscapes to tighter 40mm framing for portraits and event coverage, it offers a flexible 2.4x zoom range equivalent to approximately 25.5–60mm on Sony/Fujifilm/L-Mount or 27–64mm on Canon RF-S, making it the ideal everyday powerhouse. Whether you’re shooting stills, capturing cinematic video, or juggling both, the Sigma 17-40mm f/1.8 Art is meticulously crafted to exceed expectations.

Engineered with a cutting-edge optical design of 17 elements in 11 groups, including four Special Low Dispersion (SLD) and four aspherical elements, this lens delivers prime-like image clarity, virtually eliminating chromatic aberrations, coma, and distortion. An 11-blade rounded diaphragm ensures beautifully smooth bokeh, especially wide open at f/1.8—perfect for isolating subjects in low light or artistic portraiture. The result? Ultra-sharp imagery with natural color rendition and a professional aesthetic, even in challenging lighting environments. The Super Multi-Layer Coating and water- and oil-repellent front element further enhance contrast and resist flare and ghosting, providing excellent results in backlit scenes and outdoor conditions.

At the core of its swift and silent autofocus system is Sigma’s HLA (High-response Linear Actuator) motor, offering instantaneous, precise, and near-silent focusing—an invaluable asset for video creators and event shooters where discretion matters. Video shooters will especially appreciate its minimal focus breathing, internal focusing and zoom, and fully de-clickable aperture ring, which ensure buttery-smooth transitions and consistent framing. The lens also features dual customizable AFL buttons, a robust aperture ring lock switch, and an AF/MF switch, all ergonomically placed for intuitive control. Every detail has been considered for advanced creators—whether handheld or on a gimbal.

Despite its cutting-edge optics and professional control suite, the Sigma 17-40mm f/1.8 Art remains incredibly lightweight (approx. 525–560g) and compact, measuring just 72.9mm in diameter and 115.9mm in length. Built with a rugged, dust- and splash-resistant barrel and a brass bayonet mount, it’s designed to endure the rigors of fieldwork. Its minimum focusing distance of just 28cm and maximum magnification of 1:4.8 make it versatile for close-up detail shots as well. With a 67mm filter thread, it accommodates popular filter sizes for landscape, street, and commercial photography.

In a market flooded with APS-C zooms that often compromise on aperture or image quality, the Sigma 17-40mm f/1.8 DC Art stands in a league of its own. It is not just a tool, but an invitation to push your creative boundaries. Ideal for travel, weddings, editorial, content creation, and even astrophotography, it empowers photographers and filmmakers to work confidently with one lens across countless scenarios. Priced competitively at just $919, this lens punches far above its weight class—delivering full-frame performance in a nimble, mirrorless-ready package. If you're seeking uncompromising optics, professional controls, and unparalleled versatility in a fast standard zoom, the Sigma 17-40mm f/1.8 DC Art Lens is the definitive choice. Don't settle—elevate your creative workflow today.

Features:

Unmatched Constant f/1.8 Aperture Across Zoom Range

The Sigma 17-40mm f/1.8 DC Art is the world’s first and only APS-C zoom lens to offer a constant f/1.8 maximum aperture throughout the entire focal range. Unlike traditional zoom lenses that dim down at longer focal lengths, this lens maintains full brightness from 17mm to 40mm, ensuring consistent exposure and creative flexibility. The wide aperture is perfect for low-light environments, indoor events, night photography, and achieving shallow depth of field for beautiful subject isolation. It delivers more than one and a third stop of extra light over f/2.8 zooms, which is a game-changer for photographers and videographers working in unpredictable lighting.

Prime-Like Optical Performance with Complex Element Design

This lens isn’t just fast—it’s razor sharp. With a sophisticated optical design of 17 elements in 11 groups, including four Special Low Dispersion (SLD) and four aspherical elements, it achieves stunning clarity and edge-to-edge sharpness. The advanced optics minimize distortion, chromatic aberrations, sagittal coma flare, and ghosting, giving it prime-like image quality at every focal length. Whether you’re capturing ultra-wide scenes or tighter shots near 40mm, the detail retention is consistent and precise—making it ideal for professional work in editorial, commercial, and event settings.

Cinematic-Ready Design with Minimal Focus Breathing and Silent Operation

Engineered with videographers in mind, the Sigma 17-40mm f/1.8 Art is built for silent and fluid operation. It incorporates an internal zoom and focus system, so the physical length of the lens stays constant, ensuring smooth gimbal compatibility. The HLA (High-response Linear Actuator) motor delivers fast, whisper-quiet autofocus—perfect for video capture where motor noise can ruin a take. Even better, focus breathing is minimized, meaning there's virtually no change in framing when racking focus between subjects. This allows for seamless transitions in scenes and cinematic control.

Versatile Focal Range for Every Creative Need

With an equivalent full-frame field of view of 25.5–60mm (or 27–64mm on Canon RF-S), this lens covers wide-angle to short telephoto perspectives—making it perfect for landscapes, street photography, environmental portraits, product shots, and events. The ability to go from expansive wide views at 17mm to tighter framing at 40mm makes it an excellent one-lens solution for creatives who need flexibility without swapping gear.

Beautiful Bokeh and Close Focusing Capability

The 11-blade rounded diaphragm enhances the aesthetic quality of out-of-focus areas, producing smooth, creamy bokeh—particularly noticeable when shooting wide open at f/1.8. Combined with a minimum focusing distance of 28cm (11 inches) and a maximum magnification ratio of 1:4.8, this lens can also double as a semi-macro lens for capturing details, textures, and close-up compositions with artistic depth.

Tactile, Pro-Level Control with Customizable Functions

Sigma has integrated a wide range of manual and programmable controls for the working professional. The lens features a manual aperture ring, which can be de-clicked for video use, and locked to prevent accidental shifts. It also includes two AFL (Autofocus Lock) buttons, which can be customized for different shooting functions depending on the camera body. There’s also an AF/MF switch for quick changes in focus modes and a zoom lock to prevent unintended movement during transport or extended use.

Weather-Sealed and Built for Rigorous Use

Professionals need gear that performs no matter the conditions. That’s why the Sigma 17-40mm f/1.8 Art includes a dust- and splash-resistant construction, reinforced by a durable brass bayonet mount. The front element is treated with a water- and oil-repellent coating, which helps resist smudges, fingerprints, and the elements—especially important when shooting outdoors or on location.

Compact and Lightweight Without Compromising Quality

Despite its pro-level features and constant f/1.8 aperture, this lens weighs only 525g to 560g depending on mount, and measures a compact 72.9mm in diameter and 115.9mm in length. This makes it exceptionally easy to carry, pack, or mount on lightweight rigs. It's designed to balance well on smaller APS-C mirrorless bodies, offering comfort for extended shoots without causing fatigue.

Ideal for Still Photography and Hybrid Content Creation

Thanks to its broad feature set—including high-speed autofocus, tactile controls, video-optimized mechanics, and ultra-fast optics—the Sigma 17-40mm f/1.8 DC Art is a powerful choice for hybrid shooters who move between photography and videography. It delivers consistent results whether you’re shooting handheld video interviews, landscape stills, dynamic b-roll, or cinematic sequences.

Exceptional Value in the Premium APS-C Lens Market

With an MSRP of just $919 USD, the Sigma 17-40mm f/1.8 offers industry-first features at a price point far below comparable full-frame solutions. You’re getting prime-level performance, ultra-fast aperture, and a video-friendly build—all in one lens. This makes it an irresistible value for content creators, event photographers, filmmakers, and anyone looking to invest in high-performance optics without breaking the bank.

• Event Photography: Perfect for weddings, parties, concerts, and corporate events where fast aperture and flexible focal lengths are critical for capturing both wide scenes and intimate moments.
• Portraiture (Environmental & Lifestyle): Excellent for capturing lifestyle portraits with creamy bokeh and subject separation, especially in low-light indoor or natural light settings.
• Landscape Photography: The 17mm wide end delivers dramatic vistas and sweeping scenery, while the sharp optics ensure high-resolution edge-to-edge clarity.
• Street Photography: Its compact size, silent autofocus, and wide-to-standard zoom range make it ideal for candid, unobtrusive urban shooting.
• Travel Photography & Vlogging: Lightweight and versatile, this lens is an ideal all-in-one solution for creators on the go who need both wide establishing shots and tighter subject framing.
• Video Production & Filmmaking: Equipped with internal zoom, minimal focus breathing, silent AF, and a de-clickable aperture ring—ideal for cinematic work, gimbal usage, and hybrid content creation.
• Documentary and Run-and-Gun Shooting: Fast AF, wide aperture, and constant zoom length allow for flexible shooting in dynamic environments with changing light and movement.
• Product and Food Photography: With a minimum focusing distance of 28 cm and high sharpness at close range, it’s suitable for capturing detailed shots of products, dishes, and textures.
• Astrophotography: The fast f/1.8 aperture and low coma make it capable of capturing night skies, star fields, and Milky Way compositions at wider focal lengths.
• Indoor Architecture and Real Estate: Wide-angle coverage at 17mm and minimal distortion (especially with corrections) makes it great for room interiors and wide property shots.
• Low-Light Situations: Ideal for museums, bars, theaters, or street scenes at night where lighting is limited but image quality is critical.
• YouTube and Content Creation: A versatile zoom range, professional video features, and light build make it an ideal choice for creators producing interviews, tutorials, reviews, or lifestyle content.

Pros:

• Constant f/1.8 aperture: Provides excellent low-light performance and shallow depth of field across the entire zoom range.
• Exceptional optical quality: Features 17 elements in 11 groups, including SLD and aspherical elements for sharp, high-contrast images.
• Fast, silent autofocus: HLA (High-response Linear Actuator) motor delivers quick and quiet focusing for both stills and video.
• Internal zoom and focus: Maintains consistent balance—ideal for gimbal use and stable handheld shooting.
• Video-friendly design: De-clickable aperture ring and minimal focus breathing make it perfect for professional video production.
• Compact and lightweight: Offers portability and ease of use despite its fast aperture and advanced optical design.
• Weather-sealed build: Dust- and splash-resistant with water- and oil-repellent front coating for outdoor reliability.
• Close focusing distance: 28 cm minimum focus allows for semi-macro work and detailed compositions.
• Customizable controls: Includes two programmable AFL buttons and dedicated switches for enhanced usability.
• Outstanding value: Delivers unique pro-level features at a highly competitive price point.

Cons:

• No optical image stabilization: Depends on camera body’s IBIS, if available.
• Edge softness wide open: Some softness at the corners, especially at extreme focal lengths when shot at f/1.8.
• Lens distortion: Visible barrel and pincushion distortion at 17mm and 40mm, correctable in post-processing.
• APS-C only design: Not compatible with full-frame cameras, limiting cross-system use.
• Heavier than kit lenses: Larger size and weight may not suit casual or minimalist users.

• Product Name: Sigma 17-40mm f/1.8 DC Art Lens
• Lens Type: Standard Zoom Lens for APS-C Mirrorless Cameras
• Mount Compatibility: Sony E, Fujifilm X, Canon RF-S, Leica L-Mount
• Format Coverage: APS-C (approx. 25.5–60mm equivalent; 27–64mm on RF-S)
• Focal Length: 17–40mm
• Zoom Ratio: Approx. 2.4×
• Maximum Aperture: f/1.8 constant across the entire zoom range
• Minimum Aperture: f/16
• Angle of View: 79.7° to 39.1°
• Optical Construction: 17 elements in 11 groups (4 SLD and 4 aspherical elements)
• Diaphragm Blades: 11, rounded for smooth bokeh
• Minimum Focus Distance: 28 cm (11 inches)
• Maximum Magnification Ratio: 1:4.8 (approx. 0.21×)
• Autofocus System: HLA (High-response Linear Actuator) motor for fast and silent focusing
• Focus Type: Internal focus with full-time manual override
• Focus Breathing: Minimized for smooth video transitions
• Zoom Type: Internal rotary zoom (lens length remains constant)
• Zoom Lock: Yes, prevents zoom creep
• Aperture Ring: Included with click and de-click options
• Aperture Ring Lock: Yes, to prevent accidental movement
• Control Switches: AF/MF switch, dual customizable AFL buttons
• Filter Thread Size: 67mm
• Dimensions (Diameter × Length): 72.9 mm × 115.9 mm (may vary slightly by mount)
• Weight: Approx. 525g–560g depending on mount (Sony E: 525g, Fuji X: 530g, L-Mount: 535g, RF-S: 560g)
• Lens Coating: Super Multi-Layer Coating with water- and oil-repellent front element
• Mount Material: Durable brass bayonet mount
• Weather Sealing: Dust- and splash-resistant construction
• Included Accessories: Lens hood (LH728-02), front and rear caps, documentation
• MSRP: USD $919
• Release Date: Announced June 17, 2025 (shipping starts mid-July; RF-S version in August)

• Sigma 17-40mm f/1.8 DC Art Lens
• Lens Hood (Model: LH728-02)
• Front Lens Cap
• Rear Lens Cap
• User Documentation

Is the Sigma 17-40mm f/1.8 DC Art Lens compatible with full-frame cameras?

No, this lens is designed exclusively for APS-C format mirrorless cameras. It is not compatible with full-frame cameras and may cause severe vignetting if used on a full-frame body without a crop mode.

What camera mounts are supported by this lens?

The Sigma 17-40mm f/1.8 DC Art Lens is available in Sony E, Fujifilm X, Canon RF-S, and Leica L-Mount versions, making it compatible with a wide range of popular APS-C mirrorless systems.

Does the lens have image stabilization (OIS)?

No, this lens does not include built-in optical image stabilization. It relies on the in-body image stabilization (IBIS) of the camera, if available.

How good is the lens for video shooting?

This lens is optimized for video with several features: internal zoom and focus for consistent framing, silent HLA autofocus motor, de-clickable aperture ring, and minimal focus breathing. It's ideal for handheld or gimbal-mounted video work.

What is the minimum focusing distance of the Sigma 17-40mm f/1.8?

The lens can focus as close as 28 cm (11 inches), which enables semi-macro shooting and capturing fine details at close range with a maximum magnification ratio of 1:4.8.

Can I use screw-on filters with this lens?

Yes, the lens accepts standard 67mm screw-on filters. This is great for attaching ND filters, polarizers, or UV protection without requiring step-up rings.

Is the lens weather-sealed for outdoor use?

Yes, it features a dust- and splash-resistant construction with a water- and oil-repellent coating on the front element, making it suitable for use in challenging environments.

Does the lens have a manual aperture ring?

Yes, the lens includes a physical aperture ring with click and de-click options for photography and video applications. A lock switch is also included to prevent accidental aperture changes.

How much does the Sigma 17-40mm f/1.8 Art Lens weigh?

The lens weighs approximately 525g to 560g, depending on the mount. Despite its fast constant aperture and premium optics, it remains lightweight and well-balanced for mirrorless systems.

Is this lens good for low-light photography?

Absolutely. With a constant f/1.8 aperture, it delivers exceptional low-light performance and allows for greater subject isolation and shallower depth of field, even in dim conditions.