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Viltrox AF 40mm F2.5 Air
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Viltrox · f/2.5 · Sony E mount

Viltrox AF 40mm F2.5 Air

Where to buy — 2 offers
Mount
KEY FACTS
BrandViltrox
Release Year2024
Production StatusIn Production
Lens MountSony E
SystemSony E
What We Like
+Exceptionally lightweight at just 167g, perfect for travel and street photography
+Excellent sharpness between f/5.6 and f/8, with responsive STM autofocus
+Outstanding value at budget-friendly price ($158-168), significantly cheaper than competing options
+Versatile 40mm focal length bridges 35mm and 50mm perspectives, ideal for diverse shooting styles
+Metal mount with USB-C firmware updates and includes quality petal-shaped lens hood
+Good edge-to-edge performance when stopped down, minimal distortion and CA control
Worth Knowing
−Plastic barrel construction feels less premium compared to metal alternatives, though build quality is solid
−Limited to f/2.5 aperture—slower than competing 40mm options (Nikon Z 40mm f/2 is two-thirds stop faster)
−No weather sealing (except front coating), edge softness at maximum aperture f/2.5
−Lacks aperture control ring for manual override, and some firmware compatibility issues reported with newer camera bodies

General

Brand
Viltrox
Release Year
2024
Production Status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Lens Mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Sony E
System
ⓘ
Indicates which camera system the lens is designed to attach to.
Sony E
Read our notes on general
The Viltrox AF 40mm f/2.5 "Air" series lens is a fantastic option for photographers looking for a compact, affordable prime lens with solid performance. Weighing in at just 167 g, the Viltrox AF 40mm f/2.5 is very lightweight and compact, making it an excellent lens for travel and street photography. The Viltrox AF 40mm f/2.5 Air is a very sharp lens, and overall very impressive for travel and everyday use. At under $170, it delivers remarkable image quality and versatility that punches well above its price point.

Physical

Lens Weight
167 g
Front Filter Size
ⓘ
Diameter of attachable filters.
52 mm

Optics

Focal Range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
40 mm
Aperture Range
ⓘ
Largest aperture at the lens's shortest focal length to longest focal length (aperture range start - end)
2.5
Blades
ⓘ
Number of diaphragm blades in aperture
7020
Zoom Lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
No
Closest Focusing Distance
ⓘ
Minimum distance for a subject to be in focus.
34 cm01500
Autofocus Mode
Yes