Sigma 20mm F2 DG DN | Contemporary vs Sony FE 20mm F1.8 G
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Maximum aperture: f/1.8 on the FE 20mm F1.8 G, against f/2 on the 20mm F2 DG DN | Contemporary.
- Closest focus: 0.18 m on the FE 20mm F1.8 G, against 0.22 m on the 20mm F2 DG DN | Contemporary.
- Max magnification: 0.22× on the FE 20mm F1.8 G, against 0.15× on the 20mm F2 DG DN | Contemporary.
- Weight: 370 g on the 20mm F2 DG DN | Contemporary, against 373 g on the FE 20mm F1.8 G.
 |  | |
|---|---|---|
| Lowest price today | $450 used | $998 new $998 used |
| Optics | ||
| Focal length | 20mm | 20mm |
| 35mm equivalent | 20mm (full frame) | 20mm (full frame) |
| Maximum apertureLower f-number lets in more light. A zoom wins only when it is as bright at both ends. | f/2 | f/1.8 (best) |
| Minimum aperture | f/22 | f/22 |
| Made for | Full frame | Full frame |
| Elements / groups | 13 / 11 | 14 / 12 |
| Aperture blades | 9 | 9 |
| Closest focus | 0.22 m | 0.18 m (best) |
| Max magnification | 0.15× | 0.22× (best) |
| Focus & handling | ||
| Autofocus | Yes (Stepping motor) | Yes (XD Linear) |
| Optical stabilisation | No | No |
| Weather sealed | — | Yes |
| Internal zoom | — | — |
| Aperture ring | Yes | Yes |
| Teleconverter compatible | No | No |
| Size & weight | ||
| Weight | 370 g (best) | 373 g |
| Diameter × length | 70 × 72.4 mm | 73.5 × 84.7 mm |
| Filter thread | 62 mm | 67 mm |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.