Sirui Swift 20mm f/2.4 AF Lens (Sony E)

Compact Wide-Angle Creativity

The Sirui Swift 20mm f/2.4 AF Lens combines professional full-frame optics with a remarkably compact, lightweight design. Built for L-Mount cameras, it delivers an expansive 20mm perspective and a bright f/2.4 maximum aperture. Its smooth STM autofocus, 20cm minimum focus distance, and low focus breathing make it equally appealing for photography and video. Additional features include a clicked manual aperture ring, an AF/MF switch, a customizable FN button, weather-resistant construction, and a convenient 58mm filter thread. Weighing only 212g, the Swift 20mm is ideal for travel, landscapes, street photography, vlogging, and everyday creativity.

The f/2.4 maximum aperture provides dependable performance in lower-light conditions while enabling attractive background separation for close-up compositions.

Stop down to f/16 for greater depth-of-field control.

A clicked aperture ring offers tactile manual adjustment, while the Auto setting allows compatible camera-based aperture control.

The optical construction features 11 elements in 9 groups, including specialized aspherical, ED, and HRI lens elements.

These elements help suppress optical distortion, chromatic aberrations, and unwanted color fringing, while enhancing image sharpness and contrast.

The lens integrates a manual focus ring, a clicked aperture ring, an AF/MF switch, and a customizable FN button.

These controls provide convenient access to commonly used settings while keeping operation fast and intuitive. FN button assignments depend on compatible camera support.

The lens incorporates weather-resistant sealing to provide additional protection against dust and moisture during outdoor photography.

This construction is useful when working on location or in changing environments, provided appropriate precautions are taken to protect the camera and lens.