Sony E 50mm f/1.8 OSS vs Sigma 56mm f/1.4 DC DN Contemporary
Sony E 50mm f/1.8 OSS has more in its favour on paper. The 56mm f/1.4 DC DN Contemporary gathers more light for low light and background blur; the E 50mm f/1.8 OSS is cheaper. The Sony lens is the mount maker's own, while the Sigma is a third-party alternative.
Choose the E 50mm f/1.8 OSS for
- less weight (202g vs 280g)
- a lower price (about £140 vs £340)
- optical stabilisation
Choose the 56mm f/1.4 DC DN Contemporary for
- a brighter maximum aperture (f/1.4, about 0.7 stops more light)
- weather sealing
| E 50mm f/1.8 OSS | 56mm f/1.4 DC DN Contemporary | |
|---|---|---|
| Brand | Sony | Sigma |
| Focal length | 50mm | 56mm |
| Maximum aperture | f/1.8 | f/1.4 |
| Weight | 202 g | 280 g |
| Stabilisation | Yes | No |
| Weather sealing | No | Yes |
| Filter size | 49mm | 55mm |
| Made for | APSC | APSC |
| New price | £249 | £399 |
| Used at MPB (Sony E / FE) | £114–£169 | £329–£349 |
More lens comparisons
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sony E 50mm f/1.8 OSS better than the Sigma 56mm f/1.4 DC DN Contemporary?
The E 50mm f/1.8 OSS offers less weight (202g vs 280g), a lower price (about £140 vs £340), optical stabilisation; the 56mm f/1.4 DC DN Contemporary offers a brighter maximum aperture (f/1.4, about 0.7 stops more light), weather sealing.
Which is better value, the E 50mm f/1.8 OSS or the 56mm f/1.4 DC DN Contemporary?
On Sony E / FE, the Sony E 50mm f/1.8 OSS costs about £140 against about £340 for the Sigma 56mm f/1.4 DC DN Contemporary (MPB used where listed, otherwise new; checked 5 November 2026).
Is f/1.4 worth it over f/1.8?
f/1.4 gathers about 0.7 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: Fujifilm X, Canon RF / RF-S, Nikon Z, L-Mount, Micro Four Thirds, Canon EF-M). Both are made for crop sensors.