Sony E 20mm f/2.8 vs Tamron 24mm f/2.8 Di III OSD M1:2
Both are Sony E mount primes for street and everyday — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Sony E 20mm f/2.8 | Tamron 24mm f/2.8 Di III OSD M1:2 |
|---|---|---|
| Focal length | 20mm | 24mm |
| Max aperture | f/2.8 | f/2.8 |
| Type | prime | prime |
| Coverage | APS-C | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Sony E 20mm f/2.8 (20mm) is wider — more in the frame for street and interiors; the Tamron 24mm f/2.8 Di III OSD M1:2 (24mm) is tighter — more reach and compression for portraits
- the Tamron 24mm f/2.8 Di III OSD M1:2 covers full-frame (also works on APS-C bodies); the Sony E 20mm f/2.8 is APS-C-only — it won't fill a full-frame sensor
- the Sony E 20mm f/2.8 is first-party (Sony) for guaranteed full autofocus and in-camera corrections; the Tamron 24mm f/2.8 Di III OSD M1:2 is third-party — usually the value pick
Where to buy
Sony E 20mm f/2.8See price on Amazon
Tamron 24mm f/2.8 Di III OSD M1:2See price on Amazon
FAQ
What's the difference between the Sony E 20mm f/2.8 and the Tamron 24mm f/2.8 Di III OSD M1:2?
The Sony E 20mm f/2.8 is 20mm f/2.8 prime, APS-C; the Tamron 24mm f/2.8 Di III OSD M1:2 is 24mm f/2.8 prime, full-frame. Both fit the Sony E mount.
Do the Sony E 20mm f/2.8 and Tamron 24mm f/2.8 Di III OSD M1:2 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 Sony E 20mm f/2.8 is APS-C-only and won't fill a full-frame sensor.
More Sony E comparisons: Sigma 14-24mm f/2.8 DG DN Art vs Sony FE 16-35mm f/2.8 GM II · Sony FE 24-70mm f/2.8 GM II vs Tamron 17-70mm f/2.8 Di III-A VC RXD · Sony E 20mm f/2.8 vs Tamron 35mm f/2.8 Di III OSD M1:2 · Sony E 20mm f/2.8 vs Samyang AF 35mm f/2.8 FE · all Sony E lenses · all comparisons