Tamron 20-40mm f/2.8 Di III VXD vs Sigma 20-60mm f/2.8-4 DG Contemporary

Both are Sony E mount zooms for wide-angle and everyday — 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	Tamron 20-40mm f/2.8 Di III VXD	Sigma 20-60mm f/2.8-4 DG Contemporary
Focal length	20-40mm	20-60mm
Max aperture	f/2.8	f/2.8-4
Type	zoom	zoom
Coverage	full-frame	full-frame
Mount	Sony E	Sony E

Which should you buy?

the Tamron 20-40mm f/2.8 Di III VXD covers 20-40mm and the Sigma 20-60mm f/2.8-4 DG Contemporary covers 20-60mm — pick the range that matches what you shoot

Where to buy

Tamron 20-40mm f/2.8 Di III VXD Lens for Sony E-Mount Full Frame Mirrorless Cameras Black

Tamron 20-40mm f/2.8 Di III VXDSee price on Amazon

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Sigma 20-60mm F/2.8-4 DG | Contemporary | Standard Zoom Lens for Full-Frame Cameras, Covering an Ultra-Wide 20mm to a St

Sigma 20-60mm f/2.8-4 DG ContemporarySee price on Amazon

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FAQ

What's the difference between the Tamron 20-40mm f/2.8 Di III VXD and the Sigma 20-60mm f/2.8-4 DG Contemporary?
The Tamron 20-40mm f/2.8 Di III VXD is 20-40mm f/2.8 zoom, full-frame; the Sigma 20-60mm f/2.8-4 DG Contemporary is 20-60mm f/2.8-4 zoom, full-frame. Both fit the Sony E mount.

Do the Tamron 20-40mm f/2.8 Di III VXD and Sigma 20-60mm f/2.8-4 DG Contemporary 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:

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Tamron 20-40mm f/2.8 Di III VXDAffiliate linkSee price on Amazon