Yongnuo YN 16mm f/1.8S DA DSM vs Sigma 20mm f/1.4 DG DN Art

Both are Sony E mount primes for wide-angle and astrophotography — 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	Yongnuo YN 16mm f/1.8S DA DSM	Sigma 20mm f/1.4 DG DN Art
Focal length	16mm	20mm
Max aperture	f/1.8	f/1.4
Type	prime	prime
Coverage	APS-C	full-frame
Mount	Sony E	Sony E

Which should you buy?

the Sigma 20mm f/1.4 DG DN Art opens wider (f/1.4) — brighter in low light and more background blur
the Yongnuo YN 16mm f/1.8S DA DSM (16mm) is wider — more in the frame for street and interiors; the Sigma 20mm f/1.4 DG DN Art (20mm) is tighter — more reach and compression for portraits
the Sigma 20mm f/1.4 DG DN Art covers full-frame (also works on APS-C bodies); the Yongnuo YN 16mm f/1.8S DA DSM is APS-C-only — it won't fill a full-frame sensor

Where to buy

YONGNUO 16mm F1.8 Lens for Sony E Mount APS-C Mirrorless Cameras

Yongnuo YN 16mm f/1.8S DA DSMSee price on Amazon

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Sigma 20mm f/1.4 DG DN ArtSee price on Amazon

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FAQ

What's the difference between the Yongnuo YN 16mm f/1.8S DA DSM and the Sigma 20mm f/1.4 DG DN Art?
The Yongnuo YN 16mm f/1.8S DA DSM is 16mm f/1.8 prime, APS-C; the Sigma 20mm f/1.4 DG DN Art is 20mm f/1.4 prime, full-frame. Both fit the Sony E mount.

Which is better in low light, the Yongnuo YN 16mm f/1.8S DA DSM or the Sigma 20mm f/1.4 DG DN Art?
The Sigma 20mm f/1.4 DG DN Art — its f/1.4 maximum aperture lets in more light and gives more background blur than the f/1.8 of the other.

Do the Yongnuo YN 16mm f/1.8S DA DSM and Sigma 20mm f/1.4 DG DN Art 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 Yongnuo YN 16mm f/1.8S DA DSM 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 50mm f/1.4 DG DN Art vs Sony FE 50mm f/1.4 GM · Sony FE 40mm f/2.5 G vs Sony FE 50mm f/2.5 G · Sirui Sniper 33mm f/1.2 vs Samyang AF 35mm f/1.8 P FE · Sigma 16-300mm f/3.5-6.7 DC OS Contemporary vs Tamron 28-200mm f/2.8-5.6 Di III RXD · all Sony E lenses · all comparisons

Yongnuo YN 16mm f/1.8S DA DSMAffiliate linkSee price on Amazon