Tamron 17-70mm f/2.8 Di III-A VC RXD vs Tamron 28-75mm f/2.8 Di III VXD G2
Both are Sony E mount zooms for everyday and pro standard zoom — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Tamron 17-70mm f/2.8 Di III-A VC RXD | Tamron 28-75mm f/2.8 Di III VXD G2 |
|---|---|---|
| Focal length | 17-70mm | 28-75mm |
| Max aperture | f/2.8 | f/2.8 |
| Type | zoom | zoom |
| Coverage | APS-C | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Tamron 17-70mm f/2.8 Di III-A VC RXD covers 17-70mm and the Tamron 28-75mm f/2.8 Di III VXD G2 covers 28-75mm — pick the range that matches what you shoot
- the Tamron 28-75mm f/2.8 Di III VXD G2 covers full-frame (also works on APS-C bodies); the Tamron 17-70mm f/2.8 Di III-A VC RXD is APS-C-only — it won't fill a full-frame sensor
Where to buy
Tamron 17-70mm f/2.8 Di III-A VC RXDSee price on Amazon
Tamron 28-75mm f/2.8 Di III VXD G2See price on Amazon
FAQ
What's the difference between the Tamron 17-70mm f/2.8 Di III-A VC RXD and the Tamron 28-75mm f/2.8 Di III VXD G2?
The Tamron 17-70mm f/2.8 Di III-A VC RXD is 17-70mm f/2.8 zoom, APS-C; the Tamron 28-75mm f/2.8 Di III VXD G2 is 28-75mm f/2.8 zoom, full-frame. Both fit the Sony E mount.
Do the Tamron 17-70mm f/2.8 Di III-A VC RXD and Tamron 28-75mm f/2.8 Di III VXD G2 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). Note the Tamron 17-70mm f/2.8 Di III-A VC RXD is APS-C-only and won't fill a full-frame sensor.
More Sony E comparisons: Sony FE 40mm f/2.5 G vs Sony FE 50mm f/2.5 G · Sigma 18-50mm f/2.8 DC DN Contemporary vs Sony E 16-55mm f/2.8 G · Tamron 28-75mm f/2.8 Di III VXD G2 vs Sony FE 24-70mm f/2.8 GM · Viltrox AF 20mm f/2.8 vs Zeiss Batis 18mm f/2.8 · all Sony E lenses · all comparisons