Lens Comparison
Sigma 17-40mm f/1.8 DC Art Lens vs Sony FE 20mm f/1.8 G
Key Differences
- Sony FE 20mm f/1.8 G has a better min focus distance (18 cm vs 28 cm).
- Sony FE 20mm f/1.8 G has a better weight (373g (13.2 oz) vs 560g (1.23 lb)).
- Sony FE 20mm f/1.8 G has a better length (84.7mm vs 115.9mm).
- Sigma 17-40mm f/1.8 DC Art Lens has a better aperture blades (11 vs 9).
- Sony FE 20mm f/1.8 G has a better price (msrp) ($899 vs $919).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 17-40mm | 20mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 17 | 14 |
| Optical Groups | 11 | 12 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.8 | f/1.8 |
| Minimum Aperture | f/16 | f/22 |
| Aperture Blades | 11 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | APS-C | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 76.5° – 37.1° | 94° – 94° |
| 35mm Equivalent | 25-60mm | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | XD Linear |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 28 cm | 18 cm |
| Max Magnification | 0.21x | 0.22x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | Yes | Yes |
| Declickable Aperture | Yes | Yes |
| Parfocal | No | No |
| Internal Zoom | Yes | No |
| General | ||
| Price (MSRP) | $919 | $899 |
| Filter Size | 67mm | 67mm |
| Diameter | 72.9mm | 73.5mm |
| Length | 115.9mm | 84.7mm |
| Weight | 560g (1.23 lb) | 373g (13.2 oz) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
