Sony FE 20mm F1.8 G vs Sigma 20mm F2 DG DN | Contemporary 022
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sony FE 20mm F1.8 G is faster by 0.3 stops (f/1.8 vs f/2.0), letting in more light.
| Spec | FE 20mm F1.8 G | 20mm F2 DG DN | Contemporary 022 |
|---|---|---|
| Brand | Sony | Sigma |
| Mount | Sony E | Sony E |
| Type | Prime | Prime |
| Focal length | 20mm | 20mm |
| Max aperture | f/1.8 (faster) | f/2.0 |
| Released | 2020 | n/a |
| Format | full-frame | full-frame |
| Weight g | 373.0 | 370 |
| Filter mm | 67 | 62 |
| Length mm | 84.7 | 74.4 |
| Diameter mm | 73.5 | 70.0 |
| Min focus m | 0.18 (closer focusing) | 0.22 |
| Max magnification | 0.22 | 0.15 |
| Blades | n/a | 9 |
| Groups | n/a | 11 |
| Af motor | n/a | Stepping motor |
| Elements | n/a | 13 |
Sony FE 20mm F1.8 G
A compact wide-angle prime for full-frame E-mount with an f/1.8 aperture and an aperture ring. It weighs about 373 g and suits landscapes, astro and interiors.
Pros
- f/1.8 in a compact body
- Aperture ring
- Close focus to 0.18 m
Cons
- Visible vignetting wide open
- Wide angle exaggerates perspective
Sigma 20mm F2 DG DN | Contemporary 022
A compact wide-angle prime for full-frame mirrorless in Sigma's I series, with a metal body and aperture ring. It offers an f/2 aperture.
Pros
- Metal construction
- Aperture ring
- Compact at about 370 g
Cons
- f/2 is slower than f/1.4 options
- Some vignetting wide open