Viltrox AF 40mm f2.5 FE Lens (Sony E)

The Viltrox AF 40mm f/2.5 FE is a compact and versatile standard prime lens designed for Sony full‑frame E‑mount mirrorless cameras. With a natural 40mm focal length and a bright f/2.5 aperture, this lens offers a balance of everyday usability and optical quality—making it perfect for street photography, travel, portraits, documentary work, and video.

The optical formula incorporates multiple aspherical and low‑dispersion elements to deliver sharp images with controlled chromatic aberration and reduced distortion. The fast f/2.5 aperture provides solid low‑light performance and allows for pleasing background separation, giving your subject a smooth, natural bokeh even at wider apertures.

Thanks to its fast, quiet autofocus system, the 40mm f/2.5 FE focuses quickly and accurately, making it suitable for both still photography and video capture. Its internal focusing design and compact size contribute to excellent handling and portability—ideal for everyday carry and hybrid shooters.

Built with a solid metal mount and refined mechanics, the lens balances durability with lightweight performance, offering a premium feel in a small form factor.

Key Specifications

General

• Mount: Sony E‑mount
• Format: Full‑frame (compatible with APS‑C)
• Lens Type: Standard prime

Optics

• Focal Length: 40 mm
• Maximum Aperture: f/2.5
• Minimum Aperture: f/16
• Optical Construction: 8 elements in 6 groups
• Special Elements: Aspherical and low‑dispersion elements
• Aperture Blades: 9 (rounded for smooth bokeh)

Focus

• Autofocus: Yes (Stepping Motor)
• Fast and quiet AF suitable for both stills & video
• Minimum Focus Distance: Approx. 0.29 m
• Maximum Magnification: Approx. 0.16×

Build & Handling

• Filter Size: 55 mm
• Dimensions: Approx. 64 × 57‑59 mm
• Weight: Approx. 178 g (compact and lightweight)
• Metal mount for durability
• Internal focusing design (no barrel extension during focus)

Controls & Features

• USB‑C port for firmware updates
• Smooth electronic aperture control
• Designed for everyday portability and hybrid use

Compatibility

• Designed for Sony full‑frame mirrorless cameras
• Supports Sony autofocus systems including Eye AF
• Works on APS‑C bodies with approx. 60mm equivalent focal length

Use Cases

• Street, documentary, and lifestyle photography
• Travel and walkaround shooting
• Environmental portraits
• Hybrid photo/video content creation