Sony FE 135mm f/1.8 GM vs Sigma 135mm f/1.4 DG Art
Sony FE 135mm f/1.8 GM has more in its favour on paper. The 135mm f/1.4 DG Art gathers more light for low light and background blur; the FE 135mm f/1.8 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 135mm f/1.8 GM for
- less weight (950g vs 1420g)
- a lower price (about £840 vs £1,599)
Choose the 135mm f/1.4 DG Art for
- a brighter maximum aperture (f/1.4, about 0.7 stops more light)
| FE 135mm f/1.8 GM | 135mm f/1.4 DG Art | |
|---|---|---|
| Brand | Sony | Sigma |
| Focal length | 135mm | 135mm |
| Maximum aperture | f/1.8 | f/1.4 |
| Weight | 950 g | 1420 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 82mm | 82mm |
| Made for | Full frame | Full frame |
| New price | £1,899 | £1,599 |
| Used at MPB (Sony E / FE) | £819–£854 | None listed |
More lens comparisons
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sony FE 135mm f/1.8 GM better than the Sigma 135mm f/1.4 DG Art?
The FE 135mm f/1.8 GM offers less weight (950g vs 1420g), a lower price (about £840 vs £1,599); the 135mm f/1.4 DG Art offers a brighter maximum aperture (f/1.4, about 0.7 stops more light).
Which is better value, the FE 135mm f/1.8 GM or the 135mm f/1.4 DG Art?
On Sony E / FE, the Sony FE 135mm f/1.8 GM costs about £840 against about £1,599 for the Sigma 135mm f/1.4 DG Art (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: L-Mount).