Does the Tamron 17-28mm f/2.8 Di III RXD fit the Sony a7 III?

Yes. The Tamron 17-28mm f/2.8 Di III RXD is a Sony E lens and the Sony a7 III is a Sony E body, so it mounts natively. Both are full-frame, so 17-28mm is the true field of view — no crop factor.

Last verified 2026-06-21 · Sony E mount · Tamron full-frame lens · Sony full-frame body

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What the Tamron 17-28mm f/2.8 Di III RXD gives you on the Sony a7 III

Field of view: 17-28mm (true full-frame field of view)
Maximum aperture: f/2.8
Type: zoom (17-28mm)
Where it lands: ultra-wide on the Sony a7 III (8–23mm equivalent) — 25 of the 103 Sony E lenses reach this range here, the brightest being the Sony E 15mm f/1.4 G at f/1.4
Tagged for: Wide-angle Landscape Budget pro

Anything to watch for?

No. The Tamron 17-28mm f/2.8 Di III RXD and the Sony a7 III are both Sony E full-frame, which is the fully native pairing — the lens covers the whole sensor and the marked 17-28mm is the field of view you get.

Other Sony E lenses that use the Sony a7 III's full-frame sensor

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Focal	Lens	Buy	Max aperture	Type	Coverage	Best for
16-25mm	Sony FE 16-25mm f/2.8 G	Amazon →	f/2.8	zoom	Full-frame	Wide-angle Landscape Travel
16-35mm	Sony FE 16-35mm f/2.8 GM II	Amazon →	f/2.8	zoom	Full-frame	Wide-angle Landscape Pro standard zoom
16-35mm	Sony FE 16-35mm f/4 PZ G	Amazon →	f/4	zoom	Full-frame	Wide-angle Landscape Vlogging Pro standard zoom
16-28mm	Viltrox AF 16-28mm f/2.8	Amazon →	f/2.8	zoom	Full-frame	Wide-angle Landscape Pro standard zoom
16mm	Viltrox AF 16mm f/1.8	Amazon →	f/1.8	prime	Full-frame	Wide-angle Astrophotography Landscape
18-45mm	Samyang AF 18-45mm f/4-5.6 FE	Amazon →	f/4-5.6	zoom	Full-frame	Travel Everyday Compact Budget
18mm	Zeiss Batis 18mm f/2.8	Amazon →	f/2.8	prime	Full-frame	Wide-angle Landscape Astrophotography
15mm	Laowa 15mm f/2 Zero-D FE	Amazon →	f/2	prime	Full-frame	Wide-angle Astrophotography Landscape Low-light

All 103 Sony E lenses fit the Sony a7 III; 76 of them use its full-frame sensor at full resolution — check any lens against this body · best lenses for the Sony a7 III

Nearby lenses on the Sony a7 III

Sony E 11mm f/1.8 Tamron 11-20mm f/2.8 Di III-A RXD Tokina atx-m 11-18mm f/2.8 E Sony FE 16-25mm f/2.8 G Sony FE 16-35mm f/2.8 GM II Sony FE 16-35mm f/4 PZ G

FAQ

Does the Tamron 17-28mm f/2.8 Di III RXD fit the Sony a7 III?
Yes. The Tamron 17-28mm f/2.8 Di III RXD is a Sony E lens and the Sony a7 III is a Sony E body. Lens-to-body compatibility is decided by the mount, so it fits natively.

Will autofocus work?
We do not publish autofocus behaviour — FitMyLens stores only the specs that are fixed facts of the product (mount, focal length, maximum aperture, sensor coverage). Check the Tamron product page for AF support on the Sony a7 III.

What focal length will I actually get?
17-28mm. The Sony a7 III is full-frame and the Tamron 17-28mm f/2.8 Di III RXD is a full-frame lens, so the marked focal length is the field of view you get.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-21. Copy a ready-made reference:

More: Tamron 17-28mm f/2.8 Di III RXD specs · Every lens on the Sony a7 III · Best lenses for the Sony a7 III · All Sony E lenses · All cameras