Viltrox AF 25mm F1.7 Air APS-C Lens for Sony E-Mount

The Viltrox AF 25mm F1.7 Air is a lightweight, fast-aperture prime lens designed for Sony APS-C mirrorless cameras. With its bright F1.7 aperture and 38mm full-frame equivalent focal length, it delivers a natural field of view ideal for street photography, portraits, travel, and everyday shooting. The large aperture helps produce smooth, dreamy bokeh while also excelling in low-light situations, giving photographers a creative advantage in both stills and video.

Engineered for portability, the lens weighs only 170g and maintains a compact profile without compromising optical quality. Its STM autofocus motor provides quiet, accurate focusing with eye and face detection support, making it suitable for both photography and video workflows. High-quality ED, aspherical, and nano-coated elements ensure excellent clarity, minimal distortion, and vibrant, true-to-life colors. Designed for creators who want high performance in a small package, this lens is a reliable all-rounder for any Sony APS-C camera setup.

Key Features

• Bright F1.7 aperture for low-light performance & smooth background blur

• 25mm focal length (≈38mm full-frame equivalent) for natural perspective

• Lightweight design at just 170g for easy everyday carry

• Silent STM autofocus with eye & face detection support

• Internal focusing design for stable composition

• 9-blade aperture for rounded, creamy bokeh

• ED, high-refractive, and aspherical optics with nano-coating

• Minimal focus breathing for video shooting

• USB-C port for easy firmware updates

• 52mm front filter thread

• Compatible with Sony E-mount APS-C cameras

Specifications

Mount & Optical Design

• Lens Mount: Sony E-mount

• Lens Construction: 12 elements in 10 groups

• Aperture Range: F1.7 – F16

• Number of Aperture Blades: 9

• Focal Length: 25mm

• Equivalent Focal Length (APS-C): 38mm

• Viewing Angle: 60°

Autofocus & Performance

• Focus Motor: STM + Lead screw

• Focus Modes: AF / MF

• Minimum Focusing Distance: 0.3 m

• Maximum Magnification: 0.11×

• Internal Focusing: Yes

Physical Attributes

• Filter Size: 52mm

• Lens Dimensions: Φ64 × 56.4 mm

• Weight: Approx. 170g

• Lens Hood: Upgraded lotus-shaped hood

• Build: Durable metal mount

Additional Features

• Nano multi-layer coating for reduced flare

• Front element waterproof & anti-fouling coating

• Supports EXIF data transmission

• USB-C port for firmware updates