Sigma 20-60mm f/2.8-4 DG Contemporary vs Tamron 17-50mm f/4 Di III VXD
Both are Sony E mount zooms for wide-angle and everyday — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Sigma 20-60mm f/2.8-4 DG Contemporary | Tamron 17-50mm f/4 Di III VXD |
|---|---|---|
| Focal length | 20-60mm | 17-50mm |
| Max aperture | f/2.8-4 | f/4 |
| Type | zoom | zoom |
| Coverage | full-frame | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Sigma 20-60mm f/2.8-4 DG Contemporary opens wider (f/2.8-4) — brighter in low light and more background blur
- the Sigma 20-60mm f/2.8-4 DG Contemporary covers 20-60mm and the Tamron 17-50mm f/4 Di III VXD covers 17-50mm — pick the range that matches what you shoot
Where to buy
Sigma 20-60mm f/2.8-4 DG ContemporarySee price on Amazon
Tamron 17-50mm f/4 Di III VXDSee price on Amazon
FAQ
What's the difference between the Sigma 20-60mm f/2.8-4 DG Contemporary and the Tamron 17-50mm f/4 Di III VXD?
The Sigma 20-60mm f/2.8-4 DG Contemporary is 20-60mm f/2.8-4 zoom, full-frame; the Tamron 17-50mm f/4 Di III VXD is 17-50mm f/4 zoom, full-frame. Both fit the Sony E mount.
Which is better in low light, the Sigma 20-60mm f/2.8-4 DG Contemporary or the Tamron 17-50mm f/4 Di III VXD?
The Sigma 20-60mm f/2.8-4 DG Contemporary — its f/2.8-4 maximum aperture lets in more light and gives more background blur than the f/4 of the other.
Do the Sigma 20-60mm f/2.8-4 DG Contemporary and Tamron 17-50mm f/4 Di III VXD 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: Sigma 100-400mm f/5-6.3 DG DN OS vs Tamron 150-500mm f/5-6.7 Di III VC VXD · Sony E 11mm f/1.8 vs Viltrox AF 13mm f/1.4 · Sigma 135mm f/1.4 DG Art vs Viltrox AF 135mm f/1.8 LAB · Viltrox AF 15mm f/1.7 Air vs Samyang AF 18mm f/2.8 FE · all Sony E lenses · all comparisons