Sigma Art 17-40mm f/1.8 DC Art 40mm
A constant f/1.8 aperture across the 17-40mm zoom range pairs with HLA autofocus and weather-sealed construction, capturing distortion-free images with minimal optical flaws. An 11-blade diaphragm produces smooth bokeh for portraits, while the compact 530g weight and dust- and splash-proof design ensure portable durability. Best for L-Mount APS-C photographers—especially macro and portrait shooters—who need a fast, all-purpose zoom that excels in demanding conditions.
Snapshot
Pros & Cons
Pros
- Strong versatility (76th percentile) 76th
- Strong optical (72th percentile) 72th
- Strong macro (71th percentile) 71th
- Strong build (65th percentile) 65th
Cons
- Below average social proof (6th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews — so you can see whether early praise held up.
- Q1 2026100/100
Buyers in Q1 2026 universally praise this lens for exceptional sharpness, fast f/1.8 aperture, and build quality; some call it a prime replacement.
- Exceptional sharpness rivaling prime lenses, even at f/1.8
- Fast f/1.8 aperture and low-light performance praised
- Solid build quality, part of Sigma Art line
- No defects or reliability issues reported
- Q4 2025100/100
Buyers in Q4 2025 praise this lens as compact, sharp, and versatile, replacing multiple primes and outperforming Sony's G series. Enthusiasts call it a standout APS-C zoom.
- Compact size and light weight praised as ideal for walking around
- Exceptional sharpness and contrast across all focal lengths, even wide-open
- Replaces a bag of primes; users sell other lenses to keep this one
- Surpasses Sony G series and Fujifilm f/2.8 zooms in value and performance
Based on 10 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | zoom |
| Focal Length Min | 17 |
| Focal Length Max | 40 |
| Elements | 17 |
| Groups | 11 |
| Coating | Water- and Oil-Repellent Coating |
Aperture
| Max Aperture | 16 |
| Min Aperture | 1.8 |
| Constant | Yes |
| Diaphragm Blades | 11 |
Build
| Mount | L-Mount |
| Format | APS-C |
| Weather Sealed | Yes |
| Weight | 0.5 kg / 1.2 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | HLA Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 280 |
| Max Magnification | 1:4.8 |
vs Competition
| Spec | Sigma Art 17-40mm f/1.8 DC Art 40mm | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR Z 28-400mm f/4-8 VR | Panasonic LUMIX G Leica DG Vario-Elmarit H-ES50200 | Canon EF-S 18-135mm f/3.5-5.6 IS USM | Sony E SELP1650 |
|---|---|---|---|---|---|---|
| Focal Length | 17-40mm | 18-300mm | 28-400mm | 50-200mm | 18-135mm | 16-50mm |
| Max Aperture | 16 | f/3.5 | f/4 | f/2.8 | f/3.5 | f/3.5 |
| Mount | L-Mount | Fuji X | Nikon Z | Micro Four Thirds | Canon EF-S | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | false | true | true | false | false |
| Weight (g) | 530 | 92 | 726 | 655 | 515 | 116 |
| AF Type | HLA Autofocus | VXD linear motor | STM | linear motor | STM | Stepping motor |
| Lens Type | zoom | zoom | zoom | telephoto | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Sigma Art 17-40mm f/1.8 DC Art 40mm | 54.9 | 53.4 | 65 | 70.8 | 71.9 | 50 | 76.4 | 6.4 | 35.9 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 75.5 | 96.4 | 87.8 | 74.3 | 77.5 | 99.2 | 83.1 | 81.1 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.6 | 78.4 | 50.8 | 81.2 | 97 | 71.8 | 98.9 | 83.1 | 98.2 |
| Panasonic LUMIX G Leica DG Vario-Elmarit H-ES50200 Compare | 98.2 | 86.4 | 54.6 | 22.8 | 95.9 | 84.1 | 88.3 | 65.9 | 96.3 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.6 | 75.5 | 46.6 | 33.2 | 79.8 | 77.5 | 96 | 78 | 92.5 |
| Sony E SELP1650 Compare | 86.6 | 75.5 | 93.6 | 35.1 | 64.4 | 77.5 | 83.5 | 74.1 | 92.5 |
Price
Value & Pricing
B&H Photo 1 offers From CA$1,270
Amazon.ca 1 offers From CA$1,313
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
