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Viltrox AF 25mm F1.7 Air
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Viltrox · 25 mm · f/1.7 · APS-C

Viltrox AF 25mm F1.7 Air

From $176 — 1 offer
KEY FACTS
BrandViltrox
Announcement dateFeb 2025
Released2025
Production started2025
Production statusIn Production
What We Like
+Exceptional value at $175-179 price point with sharp image quality
+Compact and lightweight design (170g) ideal for street and travel photography
+Fast, quiet, and responsive STM autofocus with eye/face detection support
+F1.7 aperture offers light gathering advantage over F1.8 alternatives and pleasing bokeh with 9 aperture blades
+Excellent optical performance wide-open with minimal focus breathing making it suitable for video
Worth Knowing
−Plastic construction feels less premium than metal-bodied alternatives, though durable
−Elevated lateral chromatic aberration at edges requiring post-processing correction
−Soft corners at f/1.7 requiring stopping down to f/2.8-f/4 for sharpness across entire frame
−No aperture ring, manual focus ring, weather sealing, or AF/MF selector switch

General

Brand
Viltrox
Announcement date
ⓘ
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
Feb 2025
Released
ⓘ
Refers to the year this camera was officially made available for sale.
2025
Production started
2025
Production status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Read our notes on general
The Viltrox AF 25mm F1.7 Air is a next-gen lightweight autofocus lens offering exceptional value for beginners, with compact design, precise autofocus, and F1.7 aperture delivering excellent image quality. The lens fits seamlessly with its refreshingly small, featherweight construction, making it ideal for street photography and candid shooting. There really isn't any particular areas of weakness for the Viltrox AIR 25mm at a $175 price point, though vignetting is noticeable at f/1.7, though stopping down to f/2.8 significantly reduces it to negligible levels.

Optics

Minimum Aperture
F16
Optical Formula
10 groups, 12 elements
ED Elements
1 extra-low dispersion
Aspherical Elements
2 aspherical
High Refractive Elements
2 high-refractive index
Min focal length
25 mm
Max focal length
25 mm
Focal range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
25 mm
Zoom lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
No
Max aperture wide
1.7
Max aperture zoom
1.7
Blades
ⓘ
Number of diaphragm blades in aperture
9020
Autofocus mode
Yes
Closest focusing distance
ⓘ
Minimum distance for a subject to be in focus.
30 cm01500

Autofocus

Focus Motor
STM (Stepper Motor)
Focus Type
Internal focusing
Eye/Face Detection
Supported

Build design

Construction
Plastic body with metal mount
Weather Sealing
Limited (coated front element only)

Image stabilization

In Body Support
Compatible with body stabilization

Video

Focus Breathing
Minimal
Video Performance
Robust with low distortion

Compatibility

Full Frame Equivalent
37.5-38mm

Features

Firmware Updates
USB-C port
Coatings
HD nano multi-layer

Physical

Lens weight
170 g
Lens length
ⓘ
How long the lens is from front to back.
56 mm
Lens diameter
ⓘ
Width of the lens at its widest point
64 mm
Front filter size
ⓘ
Diameter of attachable filters.
52 mm
Maximum format
ⓘ
Largest sensor size compatible with the lens.
APS-C