Lens comparison · Sony E / FE · updated 5 November 2026
Sigma 28-70mm f/2.8 DG DN Contemporary vs Tamron 28-75mm f/2.8 Di III RXD
Sigma 28-70mm f/2.8 DG DN Contemporary28-70mm · f/2.8 · 470gTamron 28-75mm f/2.8 Di III RXD28-75mm · f/2.8 · 550g
Verdict
Tamron 28-75mm f/2.8 Di III RXD has more in its favour on paper.
Choose the 28-70mm f/2.8 DG DN Contemporary for
- less weight (470g vs 550g)
Choose the 28-75mm f/2.8 Di III RXD for
- a lower price (about £580 vs £660)
- more reach (75mm vs 70mm)
| 28-70mm f/2.8 DG DN Contemporary | 28-75mm f/2.8 Di III RXD | |
|---|---|---|
| Brand | Sigma | Tamron |
| Focal length | 28-70mm | 28-75mm |
| Maximum aperture | f/2.8 | f/2.8 |
| Weight | 470 g | 550 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 67mm | 67mm |
| Made for | Full frame | Full frame |
| New price | £749 | £599 |
| Used at MPB (Sony E / FE) | £619–£704 | £544–£624 |
More lens comparisons
FE 28-60mm f/4-5.6 vs 28-70mm f/2.8 DG DN Contemporary28-70mm f/2.8 DG DN Contemporary vs 28-75mm f/2.8 Di III VXD G2
See all Sony E / FE cameras and lenses.
Frequently asked questions
Is the Sigma 28-70mm f/2.8 DG DN Contemporary better than the Tamron 28-75mm f/2.8 Di III RXD?
The 28-70mm f/2.8 DG DN Contemporary offers less weight (470g vs 550g); the 28-75mm f/2.8 Di III RXD offers a lower price (about £580 vs £660), more reach (75mm vs 70mm).
Which is better value, the 28-70mm f/2.8 DG DN Contemporary or the 28-75mm f/2.8 Di III RXD?
On Sony E / FE, the Tamron 28-75mm f/2.8 Di III RXD costs about £580 against about £660 for the Sigma 28-70mm f/2.8 DG DN Contemporary (MPB used where listed, otherwise new; checked 5 November 2026).
Do both lenses fit the same cameras?
Both are available for Sony E / FE (and other mounts: L-Mount).