Tamron 11-20mm f/2.8 Di III-A RXD vs Tamron 20-40mm f/2.8 Di III VXD
Both are Sony E mount zooms for wide-angle and vlogging — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Tamron 11-20mm f/2.8 Di III-A RXD | Tamron 20-40mm f/2.8 Di III VXD |
|---|---|---|
| Focal length | 11-20mm | 20-40mm |
| 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 11-20mm f/2.8 Di III-A RXD covers 11-20mm and the Tamron 20-40mm f/2.8 Di III VXD covers 20-40mm — pick the range that matches what you shoot
- the Tamron 20-40mm f/2.8 Di III VXD covers full-frame (also works on APS-C bodies); the Tamron 11-20mm f/2.8 Di III-A RXD is APS-C-only — it won't fill a full-frame sensor
Where to buy
Tamron 11-20mm f/2.8 Di III-A RXDSee price on Amazon
Tamron 20-40mm f/2.8 Di III VXDSee price on Amazon
FAQ
What's the difference between the Tamron 11-20mm f/2.8 Di III-A RXD and the Tamron 20-40mm f/2.8 Di III VXD?
The Tamron 11-20mm f/2.8 Di III-A RXD is 11-20mm f/2.8 zoom, APS-C; the Tamron 20-40mm f/2.8 Di III VXD is 20-40mm f/2.8 zoom, full-frame. Both fit the Sony E mount.
Do the Tamron 11-20mm f/2.8 Di III-A RXD and Tamron 20-40mm f/2.8 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). Note the Tamron 11-20mm f/2.8 Di III-A 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 17-70mm f/2.8 Di III-A VC RXD vs Sony FE 24-50mm f/2.8 G · Tamron 70-180mm f/2.8 Di III VXD G2 vs Sony FE 70-200mm f/2.8 GM OSS · all Sony E lenses · all comparisons