Powered by a precision STM stepping motor, the Sirui 20mm delivers smooth, accurate, and quiet autofocus—a rare feature in anamorphic lenses. With eye-tracking capability and buttons for both focus mode and autofocus lock, the lens provides complete creative control. A female USB-C port enables firmware updates, ensuring lasting performance. Compact and lightweight, the lens fits advanced technology and visual quality into a form factor ideal for handheld, gimbal, and run-and-gun shooting, making it a powerful tool for independent creators and professional productions.

Anamorphic Aesthetic

• 1.33x squeeze factor for 2.35:1 images in 16:9 mode
• Unique oval bokeh enhances subject separation and depth
• Horizontal field of view equivalent to 22mm full-frame lens
• Neutral lens flares for cinematic effect

Optical Performance

• 37mm image circle covers Super 35 sensors or full-frame with vignette
• T1.8 to T22 aperture for low-light performance and depth of field control
• 15.7" minimum focus distance for close-up shots
• Aspherical lens element minimizes chromatic aberration

Advanced Autofocus

• STM stepping motor for smooth, silent autofocus
• Eye-tracking autofocus for reliable subject tracking
• AF/MF switch to toggle between autofocus and manual focus
• AF-Lock button to hold focus or recall custom focus settings

Practical Design

• Uniform gear positioning with Sirui 40mm AF Anamorphic Lens
• Compact (3.8" long) and lightweight (1.1 lb)
• 360° focus throw with standard gearing

Versatile Compatibility

• Compatible with Nikon Z-mount cameras
• Standard 77mm front filter thread
• Update lens firmware via female UCB-C port