Sony FE 50mm f/1.4 GM vs Sigma 50mm f/1.2 DG DN Art
Sony FE 50mm f/1.4 GM has more in its favour on paper. The 50mm f/1.2 DG DN Art gathers more light for low light and background blur; the FE 50mm f/1.4 GM is lighter and cheaper. The Sony lens is the mount maker's own, while the Sigma is a third-party alternative.
Choose the FE 50mm f/1.4 GM for
- less weight (516g vs 740g)
- a lower price (about £930 vs £960)
Choose the 50mm f/1.2 DG DN Art for
- a brighter maximum aperture (f/1.2, about 0.4 stops more light)
| FE 50mm f/1.4 GM | 50mm f/1.2 DG DN Art | |
|---|---|---|
| Brand | Sony | Sigma |
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.4 | f/1.2 |
| Weight | 516 g | 740 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 67mm | 72mm |
| Made for | Full frame | Full frame |
| New price | £1,399 | £1,399 |
| Used at MPB (Sony E / FE) | £934–£934 | £849–£1,079 |
More lens comparisons
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sony FE 50mm f/1.4 GM better than the Sigma 50mm f/1.2 DG DN Art?
The FE 50mm f/1.4 GM offers less weight (516g vs 740g), a lower price (about £930 vs £960); the 50mm f/1.2 DG DN Art offers a brighter maximum aperture (f/1.2, about 0.4 stops more light).
Which is better value, the FE 50mm f/1.4 GM or the 50mm f/1.2 DG DN Art?
On Sony E / FE, the Sony FE 50mm f/1.4 GM costs about £930 against about £960 for the Sigma 50mm f/1.2 DG DN Art (MPB used where listed, otherwise new; checked 5 November 2026).
Is f/1.2 worth it over f/1.4?
f/1.2 gathers about 0.4 stops more light, which helps indoors, at night and for background blur. If you mostly shoot in good light, the slower lens is usually lighter and cheaper.
Do both lenses fit the same cameras?
Both are available for Sony E / FE (and other mounts: L-Mount).