This is the press text for the new Sigma 17-40mm f/1.8 APS-C E-mount lens that will be announced on June 17:
Sigma lens preorders (open on June 17)
17-40mm f/1.8 at BHphoto, Amazon, Adorama, Fotoerhardt, WexUK.
12mm f/1.4 at BHphoto, Amazon, Adorama, Fotoerhardt, WexUK.
Sigma 17-40mm F1.8 DC | Art
Overview
A standard zoom lens with a large F1.8 aperture and exceptional image quality comparable to prime lenses across the entire zoom range.
Designed for APS-C mirrorless cameras, this lens pushes the boundaries of still and video photography expression.
The Sigma 17-40mm F1.8 DC | Art builds on the innovations of the Sigma 18-35mm F1.8 DC HSM | Art, which was the world’s first zoom lens with an F1.8 aperture.
Major Improvements
- Wider zoom range: 17–40mm vs. 18–35mm
- More than 30% lighter
- Improved optical and physical design for better portability
Key Features
Prime-like Optical Power
- Constant F1.8 aperture throughout the zoom range
- Ideal for low-light conditions and soft background blur
Outstanding Optical Performance
- High resolution even wide open at F1.8
- Uses precision aspherical elements
- Reduces chromatic aberration and sagittal coma flare
Flexible Framing
Zoom range: 17–40mm (equivalent to 25.5–60mm in full-frame). Covers wide-angle to portrait scenarios without changing lenses.
Reduced Flare & Ghosting
Multi-layer coating and advanced simulations reduce flare, delivering rich and high-contrast results.
Portability & Versatility
Internal Zoom
- Lens length remains fixed during zoom and focus
- Stable for handheld, tripod, and gimbal use
Lightweight Design
- Over 30% lighter than the previous 18–35mm
- Uses a smaller 67mm filter
- Compact enough for daily use and travel
Dust & Splash Resistance
- Front element coated to repel water and oil
- Not waterproof – caution advised in wet environments
Controls & Video Support
Dual AFL Buttons
Two programmable AFL buttons, accessible in both horizontal and vertical shooting positions (depends on camera compatibility).
High-Speed Autofocus
Uses HLA (High-response Linear Actuator) for fast, quiet, and precise focusing – suitable for both photo and video.
Minimal Focus Breathing
Reduces angle-of-view shifts when focusing – enables smooth and natural focus pulls in video.
Aperture Ring with Configurable Functions
- Manual aperture control ring with click ON/OFF
- Lock switch prevents accidental changes
- Canon RF version has a control ring instead, no aperture ring or click/lock switches
Technical Specifications
- Lens Construction: 17 elements in 11 groups (4 SLD, 4 aspherical)
- Angle of View: 79.7°–39.1°
- Aperture Blades: 11 (rounded)
- Minimum Aperture: F16
- Minimum Focusing Distance: 28 cm
- Maximum Magnification Ratio: 1:4.8 @ 40mm
- Filter Size: 67mm
- Dimensions: φ72.9mm × 115.9mm
- Weight: 535g
Supplied Accessories
- Lens Hood LH728-02
- Front Lens Cap
- Rear Lens Cap
Optional Accessories
- USB Dock UD-11 (L-Mount)
- Ceramic WR Protection Filter (67mm)
- WR Protection Filter (67mm)
- UV WR Filter (67mm)
- Circular PL WR Filter (67mm)
| Lens Mount: | SONY E-mount |
| Series: | ART |
| Sensor Compatibility: | APS-C / Crop |
| Maximum Aperture: | F1.8 |
| Weather Sealing: | Not included |
| Lens Construction: | 17 elements in 11 groups |
| Number of Aperture Blades: | 11 |
| Dimensions (Diameter × Length): | φ72.9mm × 117.9mm |
| Filter Diameter: | 67mm |
| Minimum Focusing Distance: | 28 cm |
| Minimum Aperture: | F16 |
| Focus Mode: | Manual / Autofocus |
| Field of View: | 79.7°–39.1° |
| Maximum Magnification Ratio: | 1:4.8 |
| Weight: | 525g |
| Included Accessories: | Front and rear lens caps, lens hood |