Viltrox AF 20mm f/2.8 Air vs Viltrox AF 40mm f/2.5 Air
Both are L-Mount primes for street and budget — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Viltrox AF 20mm f/2.8 Air | Viltrox AF 40mm f/2.5 Air |
|---|---|---|
| Focal length | 20mm | 40mm |
| Max aperture | f/2.8 | f/2.5 |
| Type | prime | prime |
| Coverage | full-frame | full-frame |
| Mount | L-Mount | L-Mount |
Which should you buy?
- the Viltrox AF 40mm f/2.5 Air opens wider (f/2.5) — brighter in low light and more background blur
- the Viltrox AF 20mm f/2.8 Air (20mm) is wider — more in the frame for street and interiors; the Viltrox AF 40mm f/2.5 Air (40mm) is tighter — more reach and compression for portraits
Where to buy
Viltrox AF 20mm f/2.8 AirSee price on Amazon
Viltrox AF 40mm f/2.5 AirSee price on Amazon
FAQ
What's the difference between the Viltrox AF 20mm f/2.8 Air and the Viltrox AF 40mm f/2.5 Air?
The Viltrox AF 20mm f/2.8 Air is 20mm f/2.8 prime, full-frame; the Viltrox AF 40mm f/2.5 Air is 40mm f/2.5 prime, full-frame. Both fit the L-Mount.
Which is better in low light, the Viltrox AF 20mm f/2.8 Air or the Viltrox AF 40mm f/2.5 Air?
The Viltrox AF 40mm f/2.5 Air — its f/2.5 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 40mm f/2.5 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).
More L-Mount comparisons: Panasonic Lumix S 20-60mm f/3.5-5.6 vs Panasonic Lumix S PRO 24-70mm f/2.8 · Panasonic Lumix S 20-60mm f/3.5-5.6 vs Sigma 24-70mm f/2.8 DG DN II Art · Viltrox AF 20mm f/2.8 Air vs Viltrox AF 28mm f/4.5 · Viltrox AF 40mm f/2.5 Air vs Viltrox AF 50mm f/2.0 Air · all L-Mount lenses · all comparisons