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Landscape & Architecture
The 17mm wide end provides a broad perspective for landscapes, architecture, interiors and environmental scenes.
SIGMA Art Series
SIGMA 17-40mm F1.8 DC | Art Large-Aperture Zoom Lens
Discover the SIGMA 17-40mm F1.8 DC | Art, a high-performance large-aperture zoom lens designed for APS-C mirrorless cameras. With a constant F1.8 aperture throughout the zoom range, it combines the flexibility of a zoom with image quality and rendering designed to approach prime-lens performance.
From wide-angle landscapes and architecture to portraits, weddings, events and professional video production, the 17-40mm focal range provides flexible framing while keeping the bright F1.8 aperture available at every focal length. The lens also incorporates fast HLA autofocus, an inner zoom mechanism and features designed specifically to support video production.
17–40mmZoom Range
F1.8Constant Aperture
APS-CDC Mirrorless
4 MountsL / RF / X / E
Jump to What Matters
At a Glance
SIGMA 17-40mm F1.8 DC | Art Key Highlights
- Constant F1.8 maximum aperture throughout the zoom range
- 17–40mm flexible wide-to-standard zoom range
- APS-C mirrorless lens with high optical performance
- 17 elements in 11 groups optical construction
- 4 SLD and 4 aspherical elements
- Fast and quiet HLA autofocus
- Inner zoom mechanism for stable handling
- Minimal focus breathing for video production
- Dust- and splash-resistant structure
- Water- and oil-repellent coating on the front element
- Two AFL / AF Function buttons
- 67mm filter thread
Large Aperture
Constant F1.8 Aperture for Low Light and Creative Depth
The defining feature of the SIGMA 17-40mm F1.8 DC | Art is its constant F1.8 maximum aperture. Unlike a conventional variable-aperture zoom, the lens maintains F1.8 throughout the entire 17–40mm range, giving photographers consistent exposure control and a bright aperture for low-light shooting.
The large aperture is useful for indoor scenes, evening photography, events and creative subject isolation. It also provides the freedom to work with faster shutter speeds or lower ISO settings when lighting conditions become challenging.
Constant F1.8
The maximum aperture remains F1.8 from 17mm through 40mm for consistent exposure and creative control.
The maximum aperture remains F1.8 from 17mm through 40mm for consistent exposure and creative control.
Low-Light Shooting
The bright aperture is well suited to indoor, evening, event and other challenging lighting situations.
The bright aperture is well suited to indoor, evening, event and other challenging lighting situations.
Creative Bokeh
The 11-blade rounded diaphragm supports smooth and pleasing out-of-focus rendering.
The 11-blade rounded diaphragm supports smooth and pleasing out-of-focus rendering.
Wide-to-Standard Framing
Move from expansive wide-angle compositions to more natural subject framing without changing lenses.
Move from expansive wide-angle compositions to more natural subject framing without changing lenses.
Optical Performance
Prime-Like Rendering Across a Versatile Zoom Range
SIGMA designed the 17-40mm F1.8 DC | Art to deliver image quality comparable to a prime lens while retaining the convenience of a zoom. Its optical construction uses 17 elements in 11 groups, including four SLD elements and four aspherical elements.
The optical design emphasizes correction of axial chromatic aberration and sagittal coma flare, helping maintain high resolution and fine detail even when shooting at the wide-open F1.8 aperture. SIGMA also uses advanced optical simulation and Super Multi-Layer Coating to help reduce flare and ghosting.
17 Optical Elements
17 elements in 11 groups, including 4 SLD and 4 aspherical elements.
17 elements in 11 groups, including 4 SLD and 4 aspherical elements.
Wide Angle of View
Up to 79.7° depending on the mount, providing a broad perspective at 17mm.
Up to 79.7° depending on the mount, providing a broad perspective at 17mm.
11-Blade Diaphragm
A rounded 11-blade diaphragm contributes to smooth out-of-focus rendering.
A rounded 11-blade diaphragm contributes to smooth out-of-focus rendering.
Flare Control
Super Multi-Layer Coating is designed to minimize flare and ghosting for rich, high-contrast images.
Super Multi-Layer Coating is designed to minimize flare and ghosting for rich, high-contrast images.
Optical Design
The lens combines the expressive possibilities of a constant F1.8 zoom with a compact APS-C system. Its 17–40mm range corresponds to approximately 25.5–60mm in 35mm format for most mounts, while the Canon RF version corresponds to approximately 27.2–64mm in 35mm format.
Autofocus & Video
Fast HLA Autofocus and Video-Friendly Handling
The HLA (High-response Linear Actuator) provides fast, quiet and high-precision autofocus. This makes the lens suitable not only for still photography but also for vlogging, gimbal work, events and other video applications where smooth and quiet focusing is important.
SIGMA has also incorporated an inner zoom mechanism so the overall lens length remains constant as the focal length changes. This provides stable handling on tripods and gimbals while helping reduce the practical movement associated with conventional extending zoom designs.
HLA Autofocus
High-response Linear Actuator technology provides fast, quiet and precise autofocus.
High-response Linear Actuator technology provides fast, quiet and precise autofocus.
Minimal Focus Breathing
Designed to suppress changes in angle of view during focus shifts for smoother video transitions.
Designed to suppress changes in angle of view during focus shifts for smoother video transitions.
Inner Zoom
The overall lens length remains constant during zooming for stable handling.
The overall lens length remains constant during zooming for stable handling.
Two AFL Buttons
Assignable AFL / AF Function buttons provide convenient control in landscape and portrait shooting positions.
Assignable AFL / AF Function buttons provide convenient control in landscape and portrait shooting positions.
Professional Build
Portable Art-Series Construction for Everyday Production
Although it is a large-aperture F1.8 zoom, the SIGMA 17-40mm F1.8 DC | Art is designed with portability in mind. SIGMA states that it is over 30% lighter than its 18-35mm F1.8 predecessor, making the new lens more practical for travel, everyday photography and mobile video production.
The lens features a dust- and splash-resistant structure and a water- and oil-repellent coating on the frontmost element. These features provide additional protection for outdoor use, although SIGMA notes that the lens is not waterproof.
Compact for Its Class
A large-aperture zoom designed to improve mobility without giving up F1.8 performance.
A large-aperture zoom designed to improve mobility without giving up F1.8 performance.
Dust & Splash Resistant
The structure is designed to help protect the lens during everyday outdoor use.
The structure is designed to help protect the lens during everyday outdoor use.
Front Coating
Water- and oil-repellent coating helps resist contamination on the front element.
Water- and oil-repellent coating helps resist contamination on the front element.
67mm Filter Thread
A practical 67mm filter size supports common photographic and video filter options.
A practical 67mm filter size supports common photographic and video filter options.
Mount Options
Sony E, L-Mount, Canon RF and FUJIFILM X Variants
The SIGMA 17-40mm F1.8 DC | Art is available for Sony E-mount, L-Mount, Canon RF Mount and FUJIFILM X Mount APS-C mirrorless cameras. The dimensions and weight vary slightly depending on the mount.
| Mount | Dimensions (Diameter × Length) | Weight |
|---|---|---|
| L-Mount | φ72.9mm × 115.9mm / φ2.9in. × 4.6in. | 535g / 18.9oz. |
| Canon RF Mount | φ72.9mm × 115.9mm / φ2.9in. × 4.6in. | 560g / 19.8oz. |
| FUJIFILM X Mount | φ72.9mm × 118.2mm / φ2.9in. × 4.7in. | 530g / 18.7oz. |
| Sony E-mount | φ72.9mm × 117.9mm / φ2.9in. × 4.6in. | 525g / 18.5oz. |
Choose the Correct Mount
Before ordering, confirm the exact mount required for your camera. The lens is available in four mount versions, but the mount must match your camera system. The Canon RF version is designed for Canon RF-mount APS-C mirrorless cameras.
Designed for Real-World Shooting
What Can You Shoot with the SIGMA 17-40mm F1.8 DC?
Weddings & Events
The constant F1.8 aperture and flexible zoom range make it practical for event environments where lighting and framing can change quickly.
Portraits
At the longer end of the range, photographers can create more natural subject framing while retaining the creative possibilities of F1.8.
Video Production
HLA autofocus, minimal focus breathing and an inner zoom mechanism make the lens particularly useful for professional video workflows.
Technical Reference
SIGMA 17-40mm F1.8 DC | Art Full Specifications
The specifications below follow SIGMA’s official technical data for the 17-40mm F1.8 DC | Art lens. Tap a category to expand it.
General & Optical
| Camera Type | Mirrorless |
|---|---|
| Corresponding Mount | L-Mount, Canon RF Mount, FUJIFILM X Mount, Sony E-mount |
| Sensor Format | APS-C [DC] |
| Focal Length | 17–40mm |
| Maximum Aperture | F1.8 constant throughout the zoom range |
| Minimum Aperture | F16 |
| Lens Construction | 17 elements in 11 groups (4 SLD and 4 aspherical elements) |
| Angle of View | L-Mount: 79.7°–39.1°; Canon RF: 76.5°–37.1°; FUJIFILM X / Sony E: 79.7°–39.1° |
| Number of Diaphragm Blades | 11 (rounded diaphragm) |
Focusing & Magnification
| Minimum Focusing Distance | 28cm / 11.1in. |
|---|---|
| Maximum Magnification Ratio | 1:4.8 at 40mm |
| Autofocus Motor | HLA (High-response Linear Actuator) |
| Focus Breathing | Designed to minimize focus breathing for video production |
Filter, Dimensions & Weight
| Filter Size | φ67mm |
|---|---|
| Dimensions (L-Mount) | φ72.9mm × 115.9mm / φ2.9in. × 4.6in. |
| Dimensions (Canon RF Mount) | φ72.9mm × 115.9mm / φ2.9in. × 4.6in. |
| Dimensions (FUJIFILM X Mount) | φ72.9mm × 118.2mm / φ2.9in. × 4.7in. |
| Dimensions (Sony E-mount) | φ72.9mm × 117.9mm / φ2.9in. × 4.6in. |
| Weight (L-Mount) | 535g / 18.9oz. |
| Weight (Canon RF Mount) | 560g / 19.8oz. |
| Weight (FUJIFILM X Mount) | 530g / 18.7oz. |
| Weight (Sony E-mount) | 525g / 18.5oz. |
Features & Accessories
| Edition Number | A025 |
|---|---|
| Supplied Accessories | Pouch, Lens Hood LH728-02, Front Cap LCF-67 IV, Rear Cap LCR III |
| Zoom Mechanism | Inner zoom mechanism |
| Assignable Controls | Two AFL / AF Function buttons |
| Weather Resistance | Dust- and splash-resistant structure |
| Front Coating | Water- and oil-repellent coating |
Final Thoughts
A Constant F1.8 Zoom Built for Photography and Video
The SIGMA 17-40mm F1.8 DC | Art combines the flexibility of a zoom with the creative possibilities of a constant F1.8 aperture. Its wide-to-standard focal range, high-resolution optical construction, fast HLA autofocus, inner zoom mechanism and video-focused features make it a versatile choice for photographers and creators using compatible APS-C mirrorless cameras.
For landscapes, architecture, events, portraits, travel and professional video production, this Art-series zoom provides a flexible alternative to carrying multiple prime lenses while maintaining a bright F1.8 aperture throughout the range.
Official Manufacturer Reference
For full camera compatibility, technical specifications and additional product information, visit: SIGMA 17–40mm F1.8 DC | Art — Official Product Page
