Tamron Di III F050 20mm
Tamron
77 Overall Score
vs
Sigma Art 17-40mm f/1.8 DC 40mm
Sigma
89 Overall Score
Scores
Macro
Budget
Video Cinema
Professional
Portrait
Street
Travel
Landscape
Wildlife Sports
Specifications
| Tamron Di III F050 20mm | Sigma Art 17-40mm f/1.8 DC 40mm | |
|---|---|---|
| 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, Broad-Band Anti-Reflection Coating | 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 | 119 mm★ | 280 mm |
| Max Magnification | 1:2 | 1:4.8 |
Pros & Cons
Tamron Di III F050 20mm
- Strong macro (92nd percentile)92nd %ile
- Strong build (90th percentile)90th %ile
- Strong aperture (84th percentile)84th %ile
- Strong bokeh (82nd percentile)82nd %ile
- Below average versatility (34th percentile)
Sigma Art 17-40mm f/1.8 DC 40mm
- Strong optical (97th percentile)97th %ile
- Strong bokeh (96th percentile)96th %ile
- Strong aperture (93rd percentile)93rd %ile
- Strong social proof (90th percentile)90th %ile
Pricing
Tamron Di III F050 20mm0.210score per dollar
vs
Sigma Art 17-40mm f/1.8 DC 40mm0.082score per dollar
Tamron Di III F050 20mm offers 2.6x better value for money
Verdict
Winner: Sigma Art 17-40mm f/1.8 DC 40mm
Scores 89 overall, wins 7 of 9 usage categories and 3 of 21 specs.
