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Viltrox AF 40mm f/2.5 Air vs Viltrox AF 50mm f/2.0 Air

Both are L-Mount primes for standard prime 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 · L-Mount · prices change — check the retailer

SpecViltrox AF 40mm f/2.5 AirViltrox AF 50mm f/2.0 Air
Focal length40mm50mm
Max aperturef/2.5f/2.0
Typeprimeprime
Coveragefull-framefull-frame
MountL-MountL-Mount

Which should you buy?

Where to buy

VILTROX AF 40mm F2.5 L Lens, Full Frame Autofocus Prime Lens for L Mount | AF 40/2.5 Air L, Lightweight Lens for Panason

Viltrox AF 40mm f/2.5 AirSee price on Amazon

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

VILTROX 50mm F2 L Lens for L Mount, AF 50mm f/2 Air L Full Frame Prime Lens | AF 50/2.0 L Lens for L Mount Cameras, Comp

Viltrox AF 50mm f/2.0 AirSee 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 Viltrox AF 40mm f/2.5 Air and the Viltrox AF 50mm f/2.0 Air?
The Viltrox AF 40mm f/2.5 Air is 40mm f/2.5 prime, full-frame; the Viltrox AF 50mm f/2.0 Air is 50mm f/2.0 prime, full-frame. Both fit the L-Mount.

Which is better in low light, the Viltrox AF 40mm f/2.5 Air or the Viltrox AF 50mm f/2.0 Air?
The Viltrox AF 50mm f/2.0 Air — its f/2.0 maximum aperture lets in more light and gives more background blur than the f/2.5 of the other.

Do the Viltrox AF 40mm f/2.5 Air and Viltrox AF 50mm f/2.0 Air fit the same camera?
Yes — both are L-Mount lenses, so they fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance).

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

More L-Mount comparisons: Panasonic Lumix S 20-60mm f/3.5-5.6 vs Sigma 28-70mm f/2.8 DG DN Contemporary · Panasonic Lumix S 24-105mm f/4 Macro OIS vs Panasonic Lumix S PRO 24-70mm f/2.8 · Viltrox AF 40mm f/2.5 Air vs Sigma 45mm f/2.8 DG Contemporary · Sigma 14mm f/1.4 DG Art vs 7Artisans AF 24mm f/1.8 · all L-Mount lenses · all comparisons

Viltrox AF 40mm f/2.5 AirAffiliate linkSee price on Amazon

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