Viltrox AF 25mm f/1.7 Air APS-C Lens for Fujifilm X Mount

• Super lightweight 170g design, which is perfect as an all-day and everyday lens
• Bright f/1.7 aperture is excellent for low-light shooting and beautiful background blur
• Fast, accurate autofocus with an STM motor, which is also compatible with eye and face detection
• Versatile 38mm equivalent field of view, which is similar to the human eye for a natural perspective
• Great optical quality with ED, aspherical, and high-refractive elements for sharp, clean results

Key Features

• Compact and lightweight for everyday photography and travel
• 38mm equivalent focal length for street, portrait, and general photography
• Fast and precise autofocus with a silent STM motor
• Bright f/1.7 aperture for low-light shooting and shallow depth of field
• 9-blade aperture creates smooth, circular bokeh
• High-quality optics with extra-low dispersion, high-refractive index, and aspherical elements
• Minimum focus distance of 0.3m
• Optimised for video, with minimal focus breathing and smooth focus transitions
• Durable metal mount
• USB-C port for easy firmware updates

Viltrox AF 25mm f/1.7 Air APS-C Lens for Fujifilm X Mount Summary

The Viltrox AF 25mm f/1.7 Air APS-C Lens for Fujifilm X Mount is the second model to launch in Viltrox’s newly developed Air Series. This compact  combines fast autofocus with a bright f/1.7 aperture, and excellent image quality in a highly portable form. The little fixed focal length prime lens is perfect for beginners and more experienced photographers, thanks to being versatile for everyday photography at an affordable price.

The 38mm full-frame equivalent focus range offers a slightly wide, but standard field of view, which is similar to the human eye, which is an ideal choice for street photography, environmental portraits, and creative video shooting.

Despite its small size, the AF 25mm f/1.7 includes premium optical lens elements and a silent STM AF motor, delivering fast, precise autofocus with support for face and eye detection on compatible . A 9-blade aperture produces smooth, natural bokeh, while the high-quality optics render sharp images with true-to-life colour reproduction.

Viltrox AF 25mm f/1.7 Air APS-C Lens for Fujifilm X Mount in More Detail

Fast and Reliable Autofocus

The Viltrox AF 25mm f/1.7 features a silent STM motor, for quick and precise autofocus when shooting both stills and video. The autofocus ensures sharp results without hunting for the subjects, and supports face and eye detection autofocus (on compatible cameras), enhancing portrait photography and video recording by keeping subjects in crisp focus.

Versatile 38mm Equivalent Field of View

The 25mm focal length (equivalent to 38mm on full-frame) provides a balanced perspective, which is wide enough for environmental shots, but natural enough for portraits and everyday general photography. This focal length is ideal for street photography, travel, interiors, and even group portraits, offering a versatile alternative to standard primes.

Compact and Lightweight

Weighing a mere 170g this prime lens is effortlessly portable. It is made with specialised lightweight materials, in order to provide a comfortable, low-profile shooting experience. Its pocketable size makes it easy to carry anywhere, and the compact design ensures a well-balanced feel on smaller APS-C cameras, which is ideal for handheld shooting.

Bright f/1.7 Aperture

The fast and bright f/1.7 maximum aperture offers excellent low-light performance, which is perfect for dimly lit environments where you won’t need to raise the camera ISO unnecessarily. A 9-blade diaphragm also creates smooth, natural bokeh, helping your subjects to stand out in the frame, with pleasing bokeh and soft background blur.

Sharp Optical Performance

Despite its affordability, the Viltrox AF 25mm f/1.7 includes a high-quality optical formula including:

• 1 extra-low dispersion (ED) element to minimise chromatic aberration and enhance clarity.
• 2 high-refractive index elements to improve contrast and detail.
• 2 aspherical elements for edge-to-edge sharpness and minimal distortion.
• HD nano multi-layer coating to reduce reflections, flare, and ghosting.

This combination delivers sharp details, vibrant colours, and natural contrast, ensuring high-quality results in a broad range of lighting conditions.

Close-Up Shooting with a 0.3m Minimum Focus Distance

With a minimum focus distance of 0.3m, the AF 25mm f/1.7 from  allows for great close-up shots, capturing small objects, food, or texture with clarity. This is perfect for creative compositions, whether shooting flat lays, documentary-style images, or portraits.

Optimised for Video

The lens delivers smooth, stable focus transitions with minimal focus breathing, ensuring a more immersive cinematic experience for your viewers. It also supports in-body image stabilisation (IBIS) on compatible cameras, helping to keep handheld footage more steady. The lightweight design further enhances gimbal compatibility, and this prime lens is a great option for run-and-gun video shooters and vloggers.

Practical Features and Build Quality

• Upgraded lotus-shaped lens hood for better protection against stray light
• Fluorine-coated front element repels dust, water, and smudges for easier cleaning
• EXIF information transmission allows camera metadata recording
• Standard 52mm filter thread supports a variety of  
• Durable metal lens mount ensures secure attachment and long-term reliability
• USB-C firmware upgrade port allows for future performance enhancements

Viltrox AF 25mm f/1.7 Lens Specifications

What’s in the Box

• Viltrox AF 25mm f/1.7 Air APS-C Lens for Fujifilm X Mount
• Lens caps
• Upgraded lotus-shaped lens hood