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Tamron 70-300mm f/4.5-6.3 Di III RXD vs Tamron 50-400mm f/4.5-6.3 Di III VC VXD

Both are Sony E mount zooms for telephoto and travel — 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

SpecTamron 70-300mm f/4.5-6.3 Di III RXDTamron 50-400mm f/4.5-6.3 Di III VC VXD
Focal length70-300mm50-400mm
Max aperturef/4.5-6.3f/4.5-6.3
Typezoomzoom
Coveragefull-framefull-frame
MountSony ESony E

Which should you buy?

Where to buy

Tamron A047SF - Telephoto Lens - 70-300mm F/4.5-6.3 Di III RXD for Sony FE, Black

Tamron 70-300mm f/4.5-6.3 Di III RXDSee price on Amazon

Amazon links are affiliate links — we may earn a commission at no extra cost to you.

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

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 70-300mm f/4.5-6.3 Di III RXD and the Tamron 50-400mm f/4.5-6.3 Di III VC VXD?
The Tamron 70-300mm f/4.5-6.3 Di III RXD is 70-300mm f/4.5-6.3 zoom, full-frame; 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 Tamron 70-300mm f/4.5-6.3 Di III RXD 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).

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 · Tamron 70-300mm f/4.5-6.3 Di III RXD vs Tamron 50-300mm f/4.5-6.3 Di III VC VXD · Tamron 50-400mm f/4.5-6.3 Di III VC VXD vs Tamron 50-300mm f/4.5-6.3 Di III VC VXD · all Sony E lenses · all comparisons

Tamron 70-300mm f/4.5-6.3 Di III RXDAffiliate linkSee price on Amazon

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