Sony FE 100-400mm f/4.5 GM OSS vs Sony FE 100-400mm f/5.6-8 OSS
Both are Sony E mount zooms for sports & action and wildlife — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Sony FE 100-400mm f/4.5 GM OSS | Sony FE 100-400mm f/5.6-8 OSS |
|---|---|---|
| Focal length | 100-400mm | 100-400mm |
| Max aperture | f/4.5 | f/5.6-8 |
| Type | zoom | zoom |
| Coverage | full-frame | full-frame |
| Mount | Sony E | Sony E |
Which should you buy?
- the Sony FE 100-400mm f/4.5 GM OSS opens wider (f/4.5) — brighter in low light and more background blur
Where to buy
Check the Sony FE 100-400mm f/4.5 GM OSS price on Amazon →
Check the Sony FE 100-400mm f/5.6-8 OSS price on Amazon →
FAQ
What's the difference between the Sony FE 100-400mm f/4.5 GM OSS and the Sony FE 100-400mm f/5.6-8 OSS?
The Sony FE 100-400mm f/4.5 GM OSS is 100-400mm f/4.5 zoom, full-frame; the Sony FE 100-400mm f/5.6-8 OSS is 100-400mm f/5.6-8 zoom, full-frame. Both fit the Sony E mount.
Which is better in low light, the Sony FE 100-400mm f/4.5 GM OSS or the Sony FE 100-400mm f/5.6-8 OSS?
The Sony FE 100-400mm f/4.5 GM OSS — its f/4.5 maximum aperture lets in more light and gives more background blur than the f/5.6-8 of the other.
Do the Sony FE 100-400mm f/4.5 GM OSS and Sony FE 100-400mm f/5.6-8 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).
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