Sigma Art 17-40mm f/1.8 DC
Sigma
96 Overall Score
vs
Canon Extender RF 2x 1mm
Canon
48 Overall Score
What Buyers Say
Sigma Art 17-40mm f/1.8 DC
95 out of 100 high confidence 36 reviews
The Sigma 17-40mm f/1.8 DC DN Art lens is overwhelmingly praised for its exceptional image quality, fast constant aperture, and compact internal zoom design. Users highlight its sharpness, lightweight build, and excellent autofocus performance, especially on crop-sensor mirrorless cameras like the Canon R7 and Fujifilm bodies. A few questions about compatibility with specific cameras and features like weather sealing and aperture ring are noted, but the overall sentiment is extremely positive.
Pros
- Exceptional image quality
- Fast constant f/1.8 aperture
- Compact internal zoom design
- Lightweight build
- Sharp and bright photos
Cons
- No weather sealing mentioned
- No manual aperture ring on some mounts
- Compatibility questions with full-frame cameras
- Expensive for some buyers
Image quality 8
Aperture 7
Build quality 6
Autofocus 4
Value for money 4
Compatibility 12
Canon Extender RF 2x 1mm
No customer feedback yet
Scores
Portrait
Video Cinema
Professional
Budget
Macro
Travel
Street
Landscape
Wildlife Sports
Specifications
| Sigma Art 17-40mm f/1.8 DC | Canon Extender RF 2x 1mm | |
|---|---|---|
| Optics | ||
| Type | zoom | telephoto |
| Focal Length Min | 17 mm | 1 mm |
| Focal Length Max | 40 mm | 1 mm |
| Elements | 17 | 9 |
| Groups | 11 | 5 |
| Aspherical Elements | 4★ | — |
| ED Elements | 4★ | — |
| Coating | Super Multi-Layer Coating | heat shield coating |
| Aperture | ||
| Max Aperture | f/1.8 | f/2 |
| Min Aperture | f/1.8 | — |
| Constant | ✓★ | — |
| Diaphragm Blades | 11★ | — |
| Build | ||
| Mount | Fujifilm X | Canon RF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg | 0.34 kg★ |
| Filter Thread | 67 mm | — |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | — |
| Stabilization | ✗ | — |
| Focus | ||
| Min Focus Distance | 280 mm★ | — |
| Max Magnification | 1:4.8 | 2.0x★ |
Pros & Cons
Sigma Art 17-40mm f/1.8 DC
- Strong user sentiment (98th percentile)98th %ile
- Strong bokeh (97th percentile)97th %ile
- Strong optical (97th percentile)97th %ile
- Strong aperture (95th percentile)95th %ile
- Below average stabilization (34th percentile)
Canon Extender RF 2x 1mm
- Strong aperture (93rd percentile)93rd %ile
- Strong bokeh (92nd percentile)92nd %ile
- Strong build (77th percentile)
- Below average macro (12th percentile)12th %ile
- Below average social proof (27th percentile)
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
Pricing
Sigma Art 17-40mm f/1.8 DC0.077score per dollar
vs
Canon Extender RF 2x 1mm0.058score per dollar
Sigma Art 17-40mm f/1.8 DC offers 1.3x better value for money
Verdict
Winner: Sigma Art 17-40mm f/1.8 DC
Scores 96 overall, wins 9 of 9 usage categories and 5 of 21 specs.
