The Sony FE 40mm f/2.5 G Lens is a compact, lightweight prime lens designed for Sony full-frame and APS-C E-mount cameras. It features a focal length of 40mm (equivalent to about 60mm on APS-C), a fast f/2.5 aperture, and a durable build with weather sealing. The lens has 9 elements in 9 groups, including 3 aspherical elements and 1 ED element, which contribute to sharp image quality with minimized aberrations. Key features include a 7-blade rounded aperture for pleasing bokeh, dual linear motors for fast and quiet autofocus, internal focusing to keep the lens size compact, and customizable focus hold buttons. It allows close focusing down to about 9.8 inches (25 cm) with a maximum magnification of 0.23x, making it versatile for close-up as well as general photography. The lens weighs about 173 grams (6.1 oz), measures roughly 68mm in diameter and 45-50mm in length, with a 49mm filter thread size. The lens design supports smooth manual focus with a linear response focus ring and has a de-clickable aperture ring ideal for video work. Its weather sealing and fluorine-coated front element enhance durability and ease maintenance in challenging shooting conditions. Overall, it is praised for its portability, image quality, and versatile everyday use for street, travel, and landscape photography. Categories: Mirroless lenses, Sony
