Tamron 70-180mm f/2.8 Di III VXD G2 vs Sony E 70-350mm f/4.5-6.3 G OSS

Both are Sony E mount zooms for telephoto and sports & action — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-06-21 · Sony E mount · prices change — check the retailer

Spec	Tamron 70-180mm f/2.8 Di III VXD G2	Sony E 70-350mm f/4.5-6.3 G OSS
Focal length	70-180mm	70-350mm
Max aperture	f/2.8	f/4.5-6.3
Type	zoom	zoom
Coverage	full-frame	APS-C
Mount	Sony E	Sony E

Which should you buy?

• the Tamron 70-180mm f/2.8 Di III VXD G2 opens wider (f/2.8) — brighter in low light and more background blur
• the Tamron 70-180mm f/2.8 Di III VXD G2 covers 70-180mm and the Sony E 70-350mm f/4.5-6.3 G OSS covers 70-350mm — pick the range that matches what you shoot
• the Tamron 70-180mm f/2.8 Di III VXD G2 covers full-frame (also works on APS-C bodies); the Sony E 70-350mm f/4.5-6.3 G OSS is APS-C-only — it won't fill a full-frame sensor
• the Sony E 70-350mm f/4.5-6.3 G OSS is first-party (Sony) for guaranteed full autofocus and in-camera corrections; the Tamron 70-180mm f/2.8 Di III VXD G2 is third-party — usually the value pick

Where to buy

Check the Tamron 70-180mm f/2.8 Di III VXD G2 price on Amazon →

Check the Sony E 70-350mm f/4.5-6.3 G OSS price on Amazon →

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which lenses we compare.

FAQ

What's the difference between the Tamron 70-180mm f/2.8 Di III VXD G2 and the Sony E 70-350mm f/4.5-6.3 G OSS?
The Tamron 70-180mm f/2.8 Di III VXD G2 is 70-180mm f/2.8 zoom, full-frame; the Sony E 70-350mm f/4.5-6.3 G OSS is 70-350mm f/4.5-6.3 zoom, APS-C. Both fit the Sony E mount.

Which is better in low light, the Tamron 70-180mm f/2.8 Di III VXD G2 or the Sony E 70-350mm f/4.5-6.3 G OSS?
The Tamron 70-180mm f/2.8 Di III VXD G2 — its f/2.8 maximum aperture lets in more light and gives more background blur than the f/4.5-6.3 of the other.

Do the Tamron 70-180mm f/2.8 Di III VXD G2 and Sony E 70-350mm f/4.5-6.3 G OSS 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 70-350mm f/4.5-6.3 G OSS 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