The Sony FE 40mm f/2.5 G is a sophisticated, ultra-compact prime lens that bridges the gap between wide-angle and normal perspectives. Part of Sony’s acclaimed G Series, this lens is engineered for photographers and filmmakers who demand high-end optical performance in a pocketable form factor. Its versatile 40mm focal length makes it an ideal “one-lens” solution for street photography, travel, and environmental portraits.
Compact & Cohesive Design
Ultra-Portable: Measuring just 1.8″ long and weighing a mere 6.1 oz, this lens is a perfect match for both full-frame and APS-C mirrorless bodies.
Premium Build: Featuring a sleek aluminum finish with engraved markings, it shares a matched design and a consistent 49mm filter thread with its 24mm and 50mm G-series siblings for a unified workflow.
Tactile Controls: Despite its small size, it features a physical aperture ring, a customizable focus hold button, and an AF/MF switch for professional handling.
High-Performance Optics
G Series Sharpness: Three aspherical elements effectively suppress distortions and aberrations, ensuring crisp, corner-to-corner resolution.
Beautiful Bokeh: A rounded 7-blade diaphragm produces a smooth, pleasing background blur, perfect for isolating subjects.
Macro Capabilities: Get close to your subjects with a minimum focusing distance of 9.8″ (MF), providing an impressive 0.23x magnification.
Advanced AF for Stills & Video
Dual Linear Motors: Two internal motors provide rapid, whisper-quiet autofocus and tenacious subject tracking—essential for both high-speed photography and cinematic video.
Video-Ready Features: The aperture ring can be de-clicked for silent, smooth exposure transitions. Additionally, the Linear Response manual focus ensures predictable and natural focusing pulls.
Internal Focusing: The lens maintains its compact length during operation, resulting in faster and more responsive focus performance.
Rugged & Reliable
Weather-Sealed: The dust- and moisture-resistant design allows you to keep shooting with confidence in challenging outdoor conditions.
Fluorine Coating: The front element is treated to repel water, oil, and fingerprints, making it easy to maintain in the field.

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