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
Check the Tamron 11-20mm f/2.8 Di III-A RXD price on Amazon →
Check the Tamron 20-40mm f/2.8 Di III VXD 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.
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