Sony E 18-200mm f/3.5-6.3 OSS vs Sigma 20-200mm f/3.5-6.3 DG Contemporary

Both are Sony E mount zooms for travel and everyday — 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 E 18-200mm f/3.5-6.3 OSS	Sigma 20-200mm f/3.5-6.3 DG Contemporary
Focal length	18-200mm	20-200mm
Max aperture	f/3.5-6.3	f/3.5-6.3
Type	zoom	zoom
Coverage	APS-C	full-frame
Mount	Sony E	Sony E

Which should you buy?

the Sony E 18-200mm f/3.5-6.3 OSS covers 18-200mm and the Sigma 20-200mm f/3.5-6.3 DG Contemporary covers 20-200mm — pick the range that matches what you shoot
the Sigma 20-200mm f/3.5-6.3 DG Contemporary covers full-frame (also works on APS-C bodies); the Sony E 18-200mm f/3.5-6.3 OSS is APS-C-only — it won't fill a full-frame sensor
the Sony E 18-200mm f/3.5-6.3 OSS is first-party (Sony) for guaranteed full autofocus and in-camera corrections; the Sigma 20-200mm f/3.5-6.3 DG Contemporary is third-party — usually the value pick

Where to buy

Sony Alpha SEL18200 E-Mount 18-200mm F3.5-6.3 OSS Lens (Silver)

Sony E 18-200mm f/3.5-6.3 OSSSee price on Amazon Amazon has no new-stock listing for this one right now — this button runs an Amazon search for it rather than opening a product page.

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20-200mm F 3.5-6.3 DG for Sony E Mount | 20-200mm zoom with HLA autofocus and 1:2 magnification for landscapes, close-up

Sigma 20-200mm f/3.5-6.3 DG ContemporarySee price on Amazon

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FAQ

What's the difference between the Sony E 18-200mm f/3.5-6.3 OSS and the Sigma 20-200mm f/3.5-6.3 DG Contemporary?
The Sony E 18-200mm f/3.5-6.3 OSS is 18-200mm f/3.5-6.3 zoom, APS-C; the Sigma 20-200mm f/3.5-6.3 DG Contemporary is 20-200mm f/3.5-6.3 zoom, full-frame. Both fit the Sony E mount.

Do the Sony E 18-200mm f/3.5-6.3 OSS and Sigma 20-200mm f/3.5-6.3 DG Contemporary 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 18-200mm f/3.5-6.3 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: Sigma 100-400mm f/5-6.3 DG DN OS vs Tamron 150-500mm f/5-6.7 Di III VC VXD · Sony E 11mm f/1.8 vs Viltrox AF 13mm f/1.4 · Sony E 18-200mm f/3.5-6.3 OSS vs Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD · Sony E 18-200mm f/3.5-6.3 OSS vs Tamron 18-200mm f/3.5-6.3 Di III VC · all Sony E lenses · all comparisons

Sigma 20-200mm f/3.5-6.3 DG ContemporaryAffiliate linkSee price on Amazon