Sony FE 40mm f2.5 G Lens

The Sony FE 40 mm f/2.5 G is a high‑quality, compact standard prime lens designed for Sony full‑frame E‑mount mirrorless cameras. Its versatile 40 mm focal length offers a natural field of view that sits between classic standard and wide‑angle perspectives—making it ideal for everyday photography, street shooting, environmental portraits, travel, and hybrid photo/video use.

Featuring a bright f/2.5 maximum aperture and an optical design optimized for sharpness and clarity, this lens delivers crisp rendering with pleasing background separation. Its lightweight, portable build makes it perfect for creators who want excellent image quality without sacrificing mobility. With fast and quiet autofocus and smooth bokeh, the 40 mm f/2.5 G strikes an appealing balance between performance, size, and versatility.

Key Specifications

General

• Lens Type: Standard prime
• Mount: Sony E‑mount (FE full‑frame)
• Format Compatibility: Full‑frame / APS‑C
  • APS‑C Equivalent Focal Length: ~60 mm
• Model: SEL40F25G

Optical Design

• Focal Length: 40 mm
• Maximum Aperture: f/2.5
• Minimum Aperture: f/22
• Optical Construction: 8 elements in 6 groups
• Special Elements:
  • AA (Advanced Aspherical) element for distortion and aberration control
• Coating: Nano AR Coating to reduce flare and ghosting
• Aperture Blades: 7 (circular diaphragm for smooth bokeh)

Autofocus & Focus

• Autofocus: Yes (Linear motor focus drive)
• Focus Drive: Fast, precise, and silent autofocus
• Minimum Focus Distance: 0.24 m (9.5 in)
• Maximum Magnification: Approx. 0.24×
• Manual Focus Override: Yes (full‑time)

Imaging & Performance

• Angle of View:
  • Full‑Frame: ~57°
  • APS‑C: Equivalent to ~60 mm
• Resolution: High contrast and sharp detail across the frame
• Bokeh: Smooth, pleasing background rendering for subject separation

Physical & Handling

• Filter Thread: 49 mm
• Dimensions (Approx.): 65.8 × 46.5 mm (diameter × length)
• Weight (Approx.): 173 g (6.1 oz)
• Build: Lightweight, compact, and balanced for everyday carry
• Focus Ring: Smooth, responsive control for precise focusing

Key Features

• Versatile 40 mm focal length for everyday shooting
• Bright f/2.5 aperture for good low‑light performance and depth‑of‑field control
• AA aspherical element for sharp, distortion‑free imagery
• Compact and lightweight design ideal for travel and handheld use
• Silent autofocus for video and stills
• Pleasant bokeh and smooth rendering

Ideal For

• Street, travel, and documentary photography
• Environmental portraits and casual portraits
• Everyday walkaround lens
• Video shooters needing a natural perspective
• APS‑C shooters seeking an approximate 60 mm prime equivalent