Lens Comparison
Sigma 20mm f/1.4 DG DN Art vs Tamron 70-180mm F/2.8 Di III VC VXD G2
Key Differences
- Sigma 20mm f/1.4 DG DN Art has a better maximum aperture (f/1.4 vs f/2.8).
- Sigma 20mm f/1.4 DG DN Art has a better min focus distance (27 cm vs 52 cm).
- Sigma 20mm f/1.4 DG DN Art has a better length (112.3mm vs 165.6mm).
- Sigma 20mm f/1.4 DG DN Art has a better weight (630g (1.39 lb) vs 855g (1.88 lb)).
- Tamron 70-180mm F/2.8 Di III VC VXD G2 has a better max magnification (0.25x vs 0.14x).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 20mm | 70-180mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 17 | 22 |
| Optical Groups | 14 | 18 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.4 | f/2.8 |
| Minimum Aperture | f/16 | f/22 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | − | − |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | VXD |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 27 cm | 52 cm |
| Max Magnification | 0.14x | 0.25x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | Yes | No |
| Declickable Aperture | Yes | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $999 | $999 |
| Filter Size | 82mm | 67mm |
| Diameter | 90mm | 80mm |
| Length | 112.3mm | 165.6mm |
| Weight | 630g (1.39 lb) | 855g (1.88 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
