Sony FE 20mm f/1.8 G Lens

The Sony FE 20mm f/1.8 G is a high-quality, ultra-wide-angle prime lens for Sony full-frame mirrorless cameras, highly praised for its optical performance and fast aperture. It features 14 elements in 12 groups, including two advanced aspherical (AA) elements and three extra-low dispersion (ED) glass elements to reduce distortion, chromatic aberrations, and flare, enhanced by a Nano AR coating for minimal reflections. The lens has a wide maximum aperture of f/1.8, making it ideal for low-light conditions and shallow depth-of-field effects.

Key highlights include exceptional sharpness across the frame even wide open at f/1.8, fast and silent autofocus via dual extreme dynamic (XD) linear motors, and a reliable build quality with weather sealing. The 94° angle of view and minimum focusing distance of about 18 cm (7.1 inches) enable versatile shooting from ultra-wide landscapes to close-up details. It also features a convenient aperture ring with a de-click function for smooth aperture control during video shooting.

This lens is considered a top choice for landscape, astrophotography, and general-purpose wide-angle photography, praised for its combination of performance, size, and value around $900 USD. It offers rich contrast, excellent color rendering, and minimal flare even in challenging light. The autofocus is accurate and fast, even in very dark environments, enhancing usability for a broad range of photographic applications.​

In summary, the Sony FE 20mm f/1.8 G is an excellent wide-angle prime lens that balances sharpness, light-gathering capability, and build quality for professional and enthusiast photographers seeking a fast ultra-wide lens for Sony full-frame mirrorless cameras.