Tamron Di III F050 20mm
Sigma Art 17-40mm f/1.8 DC
What Buyers Say
Tamron Di III F050 20mm
The Tamron 20mm f/2.8 lens for Sony E-mount is widely praised for its excellent value, sharp image quality, and compact design. Users highlight its close-focusing ability and good performance for landscapes and astrophotography, though some note the autofocus is noisy and a bit slow, especially for video. Overall, it is considered a great budget-friendly wide-angle prime that delivers impressive results for the price.
Pros
- Excellent value for money
- Sharp image quality
- Compact and lightweight design
- Good close-focusing capability
- Great for landscapes and astrophotography
Cons
- Noisy autofocus motor
- Slow autofocus for video
- Lacks weather sealing
- Feels a bit cheap to some
- Not as wide as f/1.8
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
Scores
Specifications
| Tamron Di III F050 20mm | Sigma Art 17-40mm f/1.8 DC | |
|---|---|---|
| Optics | ||
| Type | prime | zoom |
| Focal Length Min | 20 mm | 17 mm |
| Focal Length Max | 20 mm | 40 mm |
| Elements | 10 | 17 |
| Groups | 9 | 11 |
| Aspherical Elements | 1 | 4★ |
| ED Elements | 3 | 4★ |
| Coating | Fluorine Coating for protection and safe cleaning | Super Multi-Layer Coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/1.8 |
| Min Aperture | f/2.8 | f/1.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 11★ |
| Build | ||
| Mount | Sony E | Fujifilm X |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.23 kg★ | 0.54 kg |
| Filter Thread | 67 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | OSD | HLA (High-response Linear Actuator) |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 109 mm★ | 280 mm |
| Max Magnification | 1:2 | 1:4.8 |
Pros & Cons
Tamron Di III F050 20mm
- Strong macro (90th percentile)90th %ile
- Strong build (89th percentile)89th %ile
- Strong aperture (88th percentile)88th %ile
- Strong bokeh (87th percentile)87th %ile
- Below average versatility (33rd percentile)
- Below average stabilization (34th percentile)
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)
Pricing
Tamron Di III F050 20mm
No current pricing available
Sigma Art 17-40mm f/1.8 DC
Verdict
Scores 96 overall, wins 7 of 9 usage categories and 3 of 21 specs.
