Sigma 100-400mm f/5-6.3 DG DN OS vs Sony E 55-210mm f/4.5-6.3 OSS

Both are Sony E mount zooms for sports & action and telephoto — 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	Sigma 100-400mm f/5-6.3 DG DN OS	Sony E 55-210mm f/4.5-6.3 OSS
Focal length	100-400mm	55-210mm
Max aperture	f/5-6.3	f/4.5-6.3
Type	zoom	zoom
Coverage	full-frame	APS-C
Mount	Sony E	Sony E

Which should you buy?

the Sony E 55-210mm f/4.5-6.3 OSS opens wider (f/4.5-6.3) — brighter in low light and more background blur
the Sigma 100-400mm f/5-6.3 DG DN OS covers 100-400mm and the Sony E 55-210mm f/4.5-6.3 OSS covers 55-210mm — pick the range that matches what you shoot
the Sigma 100-400mm f/5-6.3 DG DN OS covers full-frame (also works on APS-C bodies); the Sony E 55-210mm f/4.5-6.3 OSS is APS-C-only — it won't fill a full-frame sensor
the Sony E 55-210mm f/4.5-6.3 OSS is first-party (Sony) for guaranteed full autofocus and in-camera corrections; the Sigma 100-400mm f/5-6.3 DG DN OS is third-party — usually the value pick

Where to buy

Sigma 100-400mm F5-6.3 Contemporary DG DN OS for Sony E Mount

Sigma 100-400mm f/5-6.3 DG DN OSSee price on Amazon

Amazon links are affiliate links — we may earn a commission at no extra cost to you.

Sony E 55-210mm F4.5-6.3 Telephoto Lens for E-Mount Cameras

Sony E 55-210mm f/4.5-6.3 OSSSee price on Amazon

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which lenses we compare.

FAQ

What's the difference between the Sigma 100-400mm f/5-6.3 DG DN OS and the Sony E 55-210mm f/4.5-6.3 OSS?
The Sigma 100-400mm f/5-6.3 DG DN OS is 100-400mm f/5-6.3 zoom, full-frame; the Sony E 55-210mm f/4.5-6.3 OSS is 55-210mm f/4.5-6.3 zoom, APS-C. Both fit the Sony E mount.

Which is better in low light, the Sigma 100-400mm f/5-6.3 DG DN OS or the Sony E 55-210mm f/4.5-6.3 OSS?
The Sony E 55-210mm f/4.5-6.3 OSS — its f/4.5-6.3 maximum aperture lets in more light and gives more background blur than the f/5-6.3 of the other.

Do the Sigma 100-400mm f/5-6.3 DG DN OS and Sony E 55-210mm f/4.5-6.3 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). Note the Sony E 55-210mm f/4.5-6.3 OSS is APS-C-only and won't fill a full-frame sensor.

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

More Sony E comparisons: Sony E 11mm f/1.8 vs Viltrox AF 13mm f/1.4 · Sony FE 14mm f/1.8 GM vs Sony FE 24mm f/1.4 GM · Sigma 14-24mm f/2.8 DG DN Art vs Sony FE 12-24mm f/4 G · Sigma 24mm f/1.4 DG DN Art vs Laowa 15mm f/2 Zero-D FE · all Sony E lenses · all comparisons

Sigma 100-400mm f/5-6.3 DG DN OSAffiliate linkSee price on Amazon