Sigma Art 17-40mm f/1.8 DC
OM System M.Zuiko 20mm F1.4 PRO 20mm
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
OM System M.Zuiko 20mm F1.4 PRO 20mm
The OM System 20mm f/1.4 Pro lens is praised for its compact size, weather sealing, and fast f/1.4 aperture, making it a versatile walk-around lens for Micro Four Thirds users. However, some reviewers note purple fringing when shooting wide open into the sun and a lack of a manual focus clutch, which is a minor drawback for some. Overall, it delivers sharp images with good build quality, though a few expected even sharper performance at f/1.4.
Pros
- Compact and lightweight design
- Excellent weather sealing
- Fast f/1.4 aperture for low light
- Sharp image quality
- Fast and accurate autofocus
Cons
- Purple fringing wide open against sun
- No manual focus clutch
- Sharpness at f/1.4 not bitingly sharp
- Chromatic aberration issues noted
Scores
Specifications
| Sigma Art 17-40mm f/1.8 DC | OM System M.Zuiko 20mm F1.4 PRO 20mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 20 mm |
| Focal Length Max | 40 mm | 20 mm |
| Elements | 17 | 10 |
| Groups | 11 | 9 |
| Aspherical Elements | 4★ | 1 |
| ED Elements | 4★ | 2 |
| Coating | Super Multi-Layer Coating | ZERO coating |
| Aperture | ||
| Max Aperture | f/1.8 | f/1.4 |
| Min Aperture | f/1.8 | f/1.4 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 11★ | 9 |
| Build | ||
| Mount | Fujifilm X | Micro Four Thirds |
| Format | APS-C★ | micro-four-thirds |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg★ | 0.70 kg |
| Filter Thread | 67 mm | 77 mm |
| AF & Stabilization | ||
| AF Type | HLA (High-response Linear Actuator) | MSC |
| Stabilization | ✗ | ✓★ |
| Focus | ||
| Min Focus Distance | 280 mm | 249 mm★ |
| Max Magnification | 1:4.8 | 1:9 |
Pros & Cons
Sigma Art 17-40mm f/1.8 DC
- Strong user sentiment (98th percentile)98th %ile
- Strong optical (97th percentile)97th %ile
- Strong bokeh (97th percentile)97th %ile
- Strong aperture (95th percentile)95th %ile
OM System M.Zuiko 20mm F1.4 PRO 20mm
- Strong bokeh (97th percentile)97th %ile
- Strong aperture (97th percentile)97th %ile
- Strong stabilization (80th percentile)80th %ile
- Strong macro (78th percentile)
- Below average social proof (9th percentile)9th %ile
- Below average user sentiment (30th percentile)
- Below average versatility (34th percentile)
Verdict
Scores 97 overall, wins 9 of 9 usage categories and 5 of 21 specs.