Sirui 20mm T1.8 1.33x S35 AF Anamorphic Lens (Nikon Z, Neutral Flares)

Combining the cinematic quality of 2.35:1 widescreen imagery with the convenience of subject-tracking autofocus, this Sirui 20mm T1.8 1.33x S35 AF Anamorphic Lens is a versatile, wide-angle lens designed specifically for Nikon Z-mount cameras with Super 35 sensors. With a 1.33x squeeze factor and T1.8 maximum aperture, the lens ensures exceptional low-light performance and allows for stunning subject isolation with its signature oval-shaped bokeh.

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.

• 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

• 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

• 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

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

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

Sirui 20mm T1.8 Anamorphic AF Specs

Focal Length	20mm
Maximum Aperture	T1.8
Lens Mount	Nikon Z
Lens Format Coverage	Super35/APS-C
Filter Thread	77 mm x 0.75
Image Stabilization	No
Electronic Communication	Yes

Maximum Aperture	T1.8
Minimum Aperture	T22
Lens Mount	Nikon Z
Interchangeable Mount	No
Horizontal Squeeze (Anamorphic)	1.33x
Flare Color	Neutral
Lens Format Coverage	Super35/APS-C
Image Circle	37.0 mm
Angle of View	Super 35 Horizontal: 85.6° Vertical: 44.2°
Focus Scales	No
Optical Design	16 Elements in 12 Groups
Filter Thread	77 mm x 0.75
Minimum Focus Distance	1.3' / 0.4 m
Aperture/Iris Blades	11
Image Stabilization	No
Gear Standard	MOD
Gear Rotation	Focus: 360°
Electronic Communication	Yes
Camera Connection	USB-C ()Firmware
Diameter	Focus Ring: 3.4" / 86.4 mm Iris Ring: 3.1" / 80 mm
Length	3.66" / 92.95 mm
Weight	1.1 lb / 501.1 g

Package Weight	2.415 lb
Box Dimensions (LxWxH)	6.6 x 6.3 x 5.6"