Tamron 20-40mm f/2.8 Di III VXD vs Tamron 11-20mm f/2.8 Di III-A RXD
Both are Sony E mount zooms for wide-angle and travel — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Tamron 20-40mm f/2.8 Di III VXD | Tamron 11-20mm f/2.8 Di III-A RXD |
|---|---|---|
| Focal length | 20-40mm | 11-20mm |
| Max aperture | f/2.8 | f/2.8 |
| Type | zoom | zoom |
| Coverage | full-frame | APS-C |
| Mount | Sony E | Sony E |
Which should you buy?
- the Tamron 20-40mm f/2.8 Di III VXD covers 20-40mm and the Tamron 11-20mm f/2.8 Di III-A RXD covers 11-20mm — 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
Check the Tamron 20-40mm f/2.8 Di III VXD price on Amazon →
Check the Tamron 11-20mm f/2.8 Di III-A RXD price on Amazon →
FAQ
What's the difference between the Tamron 20-40mm f/2.8 Di III VXD and the Tamron 11-20mm f/2.8 Di III-A RXD?
The Tamron 20-40mm f/2.8 Di III VXD is 20-40mm f/2.8 zoom, full-frame; the Tamron 11-20mm f/2.8 Di III-A RXD is 11-20mm f/2.8 zoom, APS-C. Both fit the Sony E mount.
Do the Tamron 20-40mm f/2.8 Di III VXD and Tamron 11-20mm f/2.8 Di III-A RXD 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 50mm f/1.4 GM vs Sigma 50mm f/1.4 DG DN Art · Sony FE 40mm f/2.5 G vs Sony FE 50mm f/2.5 G · Sony E 15mm f/1.4 G vs Sigma 16mm f/1.4 DC DN Contemporary · Sony FE 20-70mm f/4 G vs Tamron 20-40mm f/2.8 Di III VXD · all Sony E lenses · all comparisons