Viltrox AF 25mm f/1.7 Air - Lens review and specs

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Fujifilm X Nikon Z Sony E Prime aps-c 2026

Autofocus

Breathing Correction

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Compare with

25mm

Focal length

f/1.7

Max aperture

170 g

Weight

14mm35mm85mm200mm600mm

▲ 25mm

Max aperture

f/1.4

f/1.7

f/2.8

Constant Aperture

Zoom Ratio: 1x

Aperturef/1.7

f/1.7f/16

Near focus6' 2"

Far focus7' 8"

Total DOF1' 5"

Hyperfocal64' 0"

Subject distance6' 10"

Focal length25 mm

Aperturef/1.7

SensorAPS-C

Illustrative scene preview based on this lens's focal length, aperture, and sensor coverage.

This preview uses 25mm, f/1.7, and APS-C. Subject distance is estimated to keep lens previews comparable.

Min aperture: f/16
Diaphragm blades: 9

Optics

Optical construction: 12 elements in 10 groups
Special elements: 1 ED, 2 HR, 2 aspherical
Coatings: HD multilayer nano coating

Focusing

Minimum focus: 30 cm
AF motor: STM stepping motor

Physical

Weight: 170 g
Dimensions: ⌀64mm × 55mm
Filter thread: 52 mm
Hood included: Yes
Color: Black, Silver

Recommended Use

Ideal for: Portraits, Street, Travel, Vlogging, Walkaround / Daily

Release year: 2026
Announced: Aug 14, 2026
Approx price: $176 USD

The best

Compact and lightweight 170g APS-C standard prime with fast f/1.7 aperture for everyday shooting.

Also

12 elements in 10 groups featuring ED, HR, and aspherical glass with silent STM internal autofocus.

Summary

The Viltrox AF 25mm f/1.7 Air is a versatile, fast, and remarkably lightweight standard prime lens engineered for APS-C mirrorless cameras across Fujifilm X, Sony E, and Nikon Z mounts. Produced by Viltrox as part of its ultra-portable Air series, it weighs just 170 grams and provides a 35mm full-frame equivalent focal length of approximately 37.5mm, delivering a classic moderate wide-to-standard perspective ideal for documentary, street photography, environmental portraiture, and everyday storytelling.

Its optical configuration features 12 elements in 10 groups, incorporating one Extra-low Dispersion (ED) element, two High Refractive Index (HR) elements, and two high-precision aspherical glass elements. This advanced formula ensures high edge-to-edge sharpness and balanced contrast across the frame while effectively eliminating color fringing and optical aberrations. In addition, multi-layer nano coatings minimize flare and ghosting when shooting in challenging lighting scenarios.

Autofocus performance is powered by a quiet STM stepping motor with an internal focusing design that maintains a constant lens barrel length and delivers dependable eye/face tracking for both stills and video content creation. With a minimum focusing distance of 0.3 meters and a bright f/1.7 aperture, this lens excels in available-light environments, rendering smooth out-of-focus highlights and soft background separation.