Lens Comparison
Sigma 17mm f/4 DG DN Contemporary vs Sony FE 40mm f/2.5 G
Key Differences
- Sigma 17mm f/4 DG DN Contemporary has a better min focus distance (13 cm vs 25 cm).
- Sony FE 40mm f/2.5 G has a better maximum aperture (f/2.5 vs f/4).
- Sigma 17mm f/4 DG DN Contemporary has a better max magnification (0.5x vs 0.23x).
- Sony FE 40mm f/2.5 G has a better length (45.5mm vs 61.4mm).
- Sony FE 40mm f/2.5 G has a better weight (173g (6.1 oz) vs 225g (7.9 oz)).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 17mm | 40mm |
| Lens Type | Prime | Prime |
| Optical Elements | 10 | 8 |
| Optical Groups | 8 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/4 | f/2.5 |
| Minimum Aperture | f/22 | 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 | XD Linear |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 13 cm | 25 cm |
| Max Magnification | 0.5x | 0.23x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | Yes | Yes |
| Declickable Aperture | Yes | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $549 | $599 |
| Filter Size | 55mm | 49mm |
| Diameter | 62mm | 68mm |
| Length | 61.4mm | 45.5mm |
| Weight | 225g (7.9 oz) | 173g (6.1 oz) |
| Weather Sealed | No | Yes |
| Tripod Collar | No | No |
