Sony E PZ 10-20mm f/4 G vs Sigma 10-18mm f/2.8 DC DN Contemporary
Sony E PZ 10-20mm f/4 G has more in its favour on paper. The 10-18mm f/2.8 DC DN Contemporary gathers more light for low light and background blur; the E PZ 10-20mm f/4 G is the alternative. The Sony lens is the mount maker's own, while the Sigma is a third-party alternative.
Choose the E PZ 10-20mm f/4 G for
- less weight (178g vs 260g)
- more reach (20mm vs 18mm)
Choose the 10-18mm f/2.8 DC DN Contemporary for
- a brighter maximum aperture (f/2.8, about 1.0 stops more light)
- a lower price (about £540 vs £649)
| E PZ 10-20mm f/4 G | 10-18mm f/2.8 DC DN Contemporary | |
|---|---|---|
| Brand | Sony | Sigma |
| Focal length | 10-20mm | 10-18mm |
| Maximum aperture | f/4 | f/2.8 |
| Weight | 178 g | 260 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 62mm | 67mm |
| Made for | APSC | APSC |
| New price | £649 | £599 |
| Used at MPB (Sony E / FE) | None listed | £544–£544 |
More lens comparisons
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sony E PZ 10-20mm f/4 G better than the Sigma 10-18mm f/2.8 DC DN Contemporary?
The E PZ 10-20mm f/4 G offers less weight (178g vs 260g), more reach (20mm vs 18mm); the 10-18mm f/2.8 DC DN Contemporary offers a brighter maximum aperture (f/2.8, about 1.0 stops more light), a lower price (about £540 vs £649).
Which is better value, the E PZ 10-20mm f/4 G or the 10-18mm f/2.8 DC DN Contemporary?
On Sony E / FE, the Sigma 10-18mm f/2.8 DC DN Contemporary costs about £540 against about £649 for the Sony E PZ 10-20mm f/4 G (MPB used where listed, otherwise new; checked 5 November 2026).
Is f/2.8 worth it over f/4?
f/2.8 gathers about 1.0 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, L-Mount). Both are made for crop sensors.