Sony E 70-350mm f/4.5-6.3 G OSS vs Tamron 50-400mm f/4.5-6.3 Di III VC VXD

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

Last verified 2026-09-01 · Sony E mount · prices change — check the retailer

Spec	Sony E 70-350mm f/4.5-6.3 G OSS	Tamron 50-400mm f/4.5-6.3 Di III VC VXD
Focal length	70-350mm	50-400mm
Max aperture	f/4.5-6.3	f/4.5-6.3
Type	zoom	zoom
Coverage	APS-C	full-frame
Mount	Sony E	Sony E

Which should you buy?

the Sony E 70-350mm f/4.5-6.3 G OSS covers 70-350mm and the Tamron 50-400mm f/4.5-6.3 Di III VC VXD covers 50-400mm — pick the range that matches what you shoot
the Tamron 50-400mm f/4.5-6.3 Di III VC VXD 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 50-400mm f/4.5-6.3 Di III VC VXD is third-party — usually the value pick

Where to buy

Sony Alpha 70-350mm F4.5-6.3 G OSS Super-Telephoto APS-C Lens, Black

Sony E 70-350mm f/4.5-6.3 G OSSSee price on Amazon

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Tamron 50-400mm f/4.5-6.3 Di III VC VXD Lens for Sony E Mount

Tamron 50-400mm f/4.5-6.3 Di III VC VXDSee price on Amazon

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FAQ

What's the difference between the Sony E 70-350mm f/4.5-6.3 G OSS and the Tamron 50-400mm f/4.5-6.3 Di III VC VXD?
The Sony E 70-350mm f/4.5-6.3 G OSS is 70-350mm f/4.5-6.3 zoom, APS-C; the Tamron 50-400mm f/4.5-6.3 Di III VC VXD is 50-400mm f/4.5-6.3 zoom, full-frame. Both fit the Sony E mount.

Do the Sony E 70-350mm f/4.5-6.3 G OSS and Tamron 50-400mm f/4.5-6.3 Di III VC 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 Sony E 70-350mm f/4.5-6.3 G OSS is APS-C-only and won't fill a full-frame sensor.

Citing these specs? Go ahead — manufacturer data, last verified 2026-09-01. Copy a ready-made reference:

More Sony E comparisons: Sigma 30mm f/1.4 DC DN Contemporary vs Sony FE 35mm f/1.4 GM · Sigma 35mm f/1.4 DG DN Art vs Sony FE 35mm f/1.4 GM · Sony FE 12-24mm f/2.8 GM vs Tokina atx-m 11-18mm f/2.8 E · Sony FE 12-24mm f/2.8 GM vs Tamron 12-20mm F2.8 (A084) · all Sony E lenses · all comparisons

Sony E 70-350mm f/4.5-6.3 G OSSAffiliate linkSee price on Amazon