Sigma 135mm f/1.4 DG Art vs Viltrox AF 135mm f/1.8 LAB
Sigma 135mm f/1.4 DG Art has more in its favour on paper. The 135mm f/1.4 DG Art gathers more light for low light and background blur; the AF 135mm f/1.8 LAB is lighter and cheaper.
Choose the 135mm f/1.4 DG Art for
- a brighter maximum aperture (f/1.4, about 0.7 stops more light)
- weather sealing
Choose the AF 135mm f/1.8 LAB for
- less weight (1215g vs 1420g)
- a lower price (about £799 vs £1,599)
| 135mm f/1.4 DG Art | AF 135mm f/1.8 LAB | |
|---|---|---|
| Brand | Sigma | Viltrox |
| Focal length | 135mm | 135mm |
| Maximum aperture | f/1.4 | f/1.8 |
| Weight | 1420 g | 1215 g |
| Stabilisation | No | No |
| Weather sealing | Yes | No |
| Filter size | 82mm | 82mm |
| Made for | Full frame | Full frame |
| New price | £1,599 | £799 |
| Used at MPB (Sony E / FE) | None listed | None listed |
More lens comparisons
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sigma 135mm f/1.4 DG Art better than the Viltrox AF 135mm f/1.8 LAB?
The 135mm f/1.4 DG Art offers a brighter maximum aperture (f/1.4, about 0.7 stops more light), weather sealing; the AF 135mm f/1.8 LAB offers less weight (1215g vs 1420g), a lower price (about £799 vs £1,599).
Which is better value, the 135mm f/1.4 DG Art or the AF 135mm f/1.8 LAB?
On Sony E / FE, the Viltrox AF 135mm f/1.8 LAB costs about £799 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, Nikon Z).