Voigtländer Nokton 21mm f/1.4 E vs Sigma 15mm f/1.4 DG DN Diagonal Fisheye 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

Which should you buy?

• the Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art (15mm) is wider — more in the frame for street and interiors; the Voigtländer Nokton 21mm f/1.4 E (21mm) is tighter — more reach and compression for portraits

Where to buy

Voigtländer Nokton 21mm f/1.4 ESee price on Amazon We could not find this one on Amazon US in Sony E — this button runs an Amazon search for it rather than opening a product page.

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Sigma 15mm f/1.4 DG DN Diagonal Fisheye ArtSee price on Amazon

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FAQ

What's the difference between the Voigtländer Nokton 21mm f/1.4 E and the Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art?
The Voigtländer Nokton 21mm f/1.4 E is 21mm f/1.4 prime, full-frame; the Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art is 15mm f/1.4 prime, full-frame. Both fit the Sony E mount.

Do the Voigtländer Nokton 21mm f/1.4 E and Sigma 15mm f/1.4 DG DN Diagonal Fisheye 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).

More Sony E comparisons: Sony FE 90mm f/2.8 Macro G OSS vs Viltrox AF 75mm f/1.2 PRO · Tamron 28-75mm f/2.8 Di III VXD G2 vs Sony FE 28-60mm f/4-5.6 · Zeiss Batis 40mm f/2 CF vs Zeiss Loxia 35mm f/2 · Zeiss Batis 40mm f/2 CF vs Yongnuo YN 35mm f/2S DF DSM · all Sony E lenses · all comparisons

Sigma 15mm f/1.4 DG DN Diagonal Fisheye ArtAffiliate linkSee price on Amazon