Sony FE 600mm f/4 GM OSS vs Sony FE 400mm f/4.5 GM OSS
Both are Sony E mount primes for wildlife and sports & action — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Sony FE 600mm f/4 GM OSS | Sony FE 400mm f/4.5 GM OSS |
|---|---|---|
| Focal length | 600mm | 400mm |
| Max aperture | f/4 | f/4.5 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Sony FE 600mm f/4 GM OSS opens wider (f/4) — brighter in low light and more background blur
- the Sony FE 400mm f/4.5 GM OSS (400mm) is wider — more in the frame for street and interiors; the Sony FE 600mm f/4 GM OSS (600mm) is tighter — more reach and compression for portraits
Where to buy
Sony FE 600mm f/4 GM OSSSee price on Amazon
Sony FE 400mm f/4.5 GM OSSSee price on Amazon
FAQ
What's the difference between the Sony FE 600mm f/4 GM OSS and the Sony FE 400mm f/4.5 GM OSS?
The Sony FE 600mm f/4 GM OSS is 600mm f/4 prime, full-frame; the Sony FE 400mm f/4.5 GM OSS is 400mm f/4.5 prime, full-frame. Both fit the Sony E mount.
Which is better in low light, the Sony FE 600mm f/4 GM OSS or the Sony FE 400mm f/4.5 GM OSS?
The Sony FE 600mm f/4 GM OSS — its f/4 maximum aperture lets in more light and gives more background blur than the f/4.5 of the other.
Do the Sony FE 600mm f/4 GM OSS and Sony FE 400mm f/4.5 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).
More Sony E comparisons: Sigma 18-50mm f/2.8 DC DN Contemporary vs Sony E PZ 16-50mm f/3.5-5.6 OSS · Sony E 16-55mm f/2.8 G vs Sony E PZ 16-50mm f/3.5-5.6 OSS · Sony FE 600mm f/4 GM OSS vs Sony FE 600mm f/6.3 GM OSS · Sony FE 600mm f/4 GM OSS vs Sigma 500mm f/5.6 DG DN OS Sports · all Sony E lenses · all comparisons