Sigma Art 17-40mm f/1.8 DC
Rokinon AS UMC IO35AF-E 35mm
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
Rokinon AS UMC IO35AF-E 35mm
The Rokinon 35mm lenses receive generally positive feedback for their sharpness, compact size, and value for money, especially for travel and street photography. However, some users report issues with autofocus noise and hunting, particularly in video mode, and a few note build quality concerns. The f/1.4 version is praised for astrophotography but criticized for weight and softness wide open. Overall, it's a solid budget-friendly option with trade-offs in performance.
Pros
- Sharp image quality
- Compact and lightweight
- Great value for money
- Good for travel and street photography
- Fast aperture (f/1.4) for low light
Cons
- Noisy autofocus motor
- Autofocus hunts in video mode
- Build quality feels cheap
- Heavy for f/1.4 version
- Soft wide open at f/1.4
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | Rokinon AS UMC IO35AF-E 35mm | |
|---|---|---|
| Optics | ||
| Type | zoom | wide-angle |
| Focal Length Min | 17 mm | 35 mm |
| Focal Length Max | 40 mm | 35 mm |
| Elements | 17 | 12 |
| Groups | 11 | 10 |
| Aspherical Elements | 4★ | 1 |
| ED Elements | 4★ | — |
| Coating | Super Multi-Layer Coating | UMC Coating |
| Aperture | ||
| Max Aperture | f/1.8 | f/22 |
| Min Aperture | f/1.8 | f/2.8 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 11★ | 6 |
| Build | ||
| Mount | Fujifilm X | Canon EF |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓★ | ✗ |
| Weight | 0.54 kg | 0.09 kg★ |
| Filter Thread | 67 mm | 77 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | manual focus only |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 280 mm★ | 300 mm |
| Max Magnification | 1:4.8★ | 0.12x |
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)
Rokinon AS UMC IO35AF-E 35mm
- Strong build (97th percentile)97th %ile
- Strong social proof (86th percentile)86th %ile
- Strong optical (65th percentile)
- Below average bokeh (6th percentile)6th %ile
- Below average af (15th percentile)15th %ile
- Below average user sentiment (17th percentile)17th %ile
- Below average aperture (22nd percentile)
Pricing
Sigma Art 17-40mm f/1.8 DC offers 1.3x better value for money
Verdict
Scores 96 overall, wins 9 of 9 usage categories and 7 of 21 specs.
