Viltrox AF 20mm f/2.8 vs Sigma 17mm f/4 DG Contemporary
Both are Sony E mount primes for wide-angle and landscape — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Viltrox AF 20mm f/2.8 | Sigma 17mm f/4 DG Contemporary |
|---|---|---|
| Focal length | 20mm | 17mm |
| Max aperture | f/2.8 | f/4 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Viltrox AF 20mm f/2.8 opens wider (f/2.8) — brighter in low light and more background blur
- the Sigma 17mm f/4 DG Contemporary (17mm) is wider — more in the frame for street and interiors; the Viltrox AF 20mm f/2.8 (20mm) is tighter — more reach and compression for portraits
Where to buy
Viltrox AF 20mm f/2.8See price on Amazon
Sigma 17mm f/4 DG ContemporarySee price on Amazon
FAQ
What's the difference between the Viltrox AF 20mm f/2.8 and the Sigma 17mm f/4 DG Contemporary?
The Viltrox AF 20mm f/2.8 is 20mm f/2.8 prime, full-frame; the Sigma 17mm f/4 DG Contemporary is 17mm f/4 prime, full-frame. Both fit the Sony E mount.
Which is better in low light, the Viltrox AF 20mm f/2.8 or the Sigma 17mm f/4 DG Contemporary?
The Viltrox AF 20mm f/2.8 — its f/2.8 maximum aperture lets in more light and gives more background blur than the f/4 of the other.
Do the Viltrox AF 20mm f/2.8 and Sigma 17mm f/4 DG Contemporary fit the same camera?
Yes — both are Sony E mount lenses, so they fit Sony a7/a9/a1 (full-frame) and a6000-series (APS-C).
More Sony E comparisons: Tamron 17-70mm f/2.8 Di III-A VC RXD vs Sony E PZ 16-50mm f/3.5-5.6 OSS · Sony E 11mm f/1.8 vs Viltrox AF 20mm f/2.8 · Viltrox AF 20mm f/2.8 vs TTArtisan AF 24mm f/3.8 mini · Viltrox AF 24mm f/1.8 vs Sigma 24mm f/3.5 DG Contemporary · all Sony E lenses · all comparisons