Viltrox AF 20mm f/2.8 Air vs Viltrox AF 15mm f/1.7 Air

Both are Nikon Z mount primes for wide-angle and landscape — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.

Last verified 2026-08-31 · Nikon Z mount · prices change — check the retailer

Spec	Viltrox AF 20mm f/2.8 Air	Viltrox AF 15mm f/1.7 Air
Focal length	20mm	15mm
Max aperture	f/2.8	f/1.7
Type	prime	prime
Coverage	full-frame	APS-C
Mount	Nikon Z	Nikon Z

Which should you buy?

the Viltrox AF 15mm f/1.7 Air opens wider (f/1.7) — brighter in low light and more background blur
the Viltrox AF 15mm f/1.7 Air (15mm) is wider — more in the frame for street and interiors; the Viltrox AF 20mm f/2.8 Air (20mm) is tighter — more reach and compression for portraits
the Viltrox AF 20mm f/2.8 Air covers full-frame (also works on APS-C bodies); the Viltrox AF 15mm f/1.7 Air is APS-C-only — it won't fill a full-frame sensor

Where to buy

VILTROX 20mm F2.8 Z Lens, Full Frame Wide Angle Lens for Nikon Z

Check the Viltrox AF 20mm f/2.8 Air price on Amazon →

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VILTROX 15mm f/1.7 Z, AF 15mm F1.7 Z Wide Angle Lens for Nikon Z Mount

Check the Viltrox AF 15mm f/1.7 Air price on Amazon →

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FAQ

What's the difference between the Viltrox AF 20mm f/2.8 Air and the Viltrox AF 15mm f/1.7 Air?
The Viltrox AF 20mm f/2.8 Air is 20mm f/2.8 prime, full-frame; the Viltrox AF 15mm f/1.7 Air is 15mm f/1.7 prime, APS-C. Both fit the Nikon Z mount.

Which is better in low light, the Viltrox AF 20mm f/2.8 Air or the Viltrox AF 15mm f/1.7 Air?
The Viltrox AF 15mm f/1.7 Air — its f/1.7 maximum aperture lets in more light and gives more background blur than the f/2.8 of the other.

Do the Viltrox AF 20mm f/2.8 Air and Viltrox AF 15mm f/1.7 Air fit the same camera?
Yes — both are Nikon Z mount lenses, so they fit Nikon Z series (Z6/Z7/Z8/Z9 full-frame, Z50/Zfc APS-C). Note the Viltrox AF 15mm f/1.7 Air is APS-C-only and won't fill a full-frame sensor.

Citing these specs? Go ahead — manufacturer data, last verified 2026-08-31. Copy a ready-made reference:

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Viltrox AF 20mm f/2.8 AirAffiliate linkAmazon →