Sigma Art 17-40mm f/1.8 DC
Canon L EF 600mm f/4L IS III USM 600mm
What Buyers Say
Sigma Art 17-40mm f/1.8 DC
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
Canon L EF 600mm f/4L IS III USM 600mm
The Canon RF 600mm f/4 L IS USM lens is widely praised for its exceptional sharpness, fast autofocus, and significant weight reduction compared to previous versions, making it a favorite among wildlife and bird photographers. However, a notable number of users report a serious image stabilization issue causing vertical blur at slower shutter speeds, particularly with the 5D Mark IV, which has led to frustration and some negative reviews. Other complaints include the flimsy included case, expensive replacement hood, and a few isolated quality control problems like stripped tripod foot screws and a failed front element coating.
Pros
- Exceptional image sharpness
- Fast and accurate autofocus
- Significant weight reduction
- Good balance and handholdability
- Excellent with teleconverters
Cons
- Image stabilization blur at slow shutter speeds
- Flimsy included carrying case
- Expensive replacement lens hood
- Tripod foot screws stripped
- Front element coating failure
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | Canon L EF 600mm f/4L IS III USM 600mm | |
|---|---|---|
| Optics | ||
| Type | zoom | super-telephoto |
| Focal Length Min | 17 mm | 600 mm |
| Focal Length Max | 40 mm | 600 mm |
| Elements | 17 | 17 |
| Groups | 11 | 13 |
| Aspherical Elements | 4★ | 1 |
| ED Elements | 4★ | 1 |
| Coating | Super Multi-Layer Coating | Super Spectra and Air Sphere Coatings |
| Aperture | ||
| Max Aperture | f/1.8 | f/32 |
| Min Aperture | f/1.8 | f/4 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 11★ | 9 |
| Build | ||
| Mount | Fujifilm X | Canon EF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg★ | 3.05 kg |
| Filter Thread | 67 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | USM★ |
| Stabilization | ✗ | ✓★ |
| Stabilization Stops | — | 5.5 stops★ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 4.20 m |
| Max Magnification | 1:4.8 | 1:6.67 |
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 L EF 600mm f/4L IS III USM 600mm
- Strong stabilization (98th percentile)98th %ile
- Strong af (93rd percentile)93rd %ile
- Strong optical (85th percentile)85th %ile
- Below average aperture (5th percentile)5th %ile
- Below average build (7th percentile)7th %ile
- Below average bokeh (8th percentile)8th %ile
- Below average user sentiment (17th percentile)17th %ile
Pricing
Sigma Art 17-40mm f/1.8 DC offers 38.5x better value for money
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 5 of 22 specs.
