Sony FE 300mm f/2.8 GM OSS vs Sony FE 400mm f/2.8 GM OSS

Both are Sony E mount primes for sports & action and wildlife — 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 FE 300mm f/2.8 GM OSS	Sony FE 400mm f/2.8 GM OSS
Focal length	300mm	400mm
Max aperture	f/2.8	f/2.8
Type	prime	prime
Coverage	full-frame	full-frame
Mount	Sony E	Sony E

Which should you buy?

the Sony FE 300mm f/2.8 GM OSS (300mm) is wider — more in the frame for street and interiors; the Sony FE 400mm f/2.8 GM OSS (400mm) is tighter — more reach and compression for portraits

Where to buy

Sony FE 300mm f/2.8 GM OSSSee price on Amazon

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Sony FE 400mm f/2.8 GM OSSSee price on Amazon

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FAQ

What's the difference between the Sony FE 300mm f/2.8 GM OSS and the Sony FE 400mm f/2.8 GM OSS?
The Sony FE 300mm f/2.8 GM OSS is 300mm f/2.8 prime, full-frame; the Sony FE 400mm f/2.8 GM OSS is 400mm f/2.8 prime, full-frame. Both fit the Sony E mount.

Do the Sony FE 300mm f/2.8 GM OSS and Sony FE 400mm f/2.8 GM 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).

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

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Sony FE 300mm f/2.8 GM OSSAffiliate linkSee price on Amazon