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SIRUI 20mm T1.8 1.33X S35 AF Anamorphic Lens
SKU:
20AF133X-EN
€819,00
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SIRUI 20mm T1.8 1.33X S35 AF Anamorphic Lens - Neutral / AND is in stock and will be shipped as soon as it is available again
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EXPANSIVE PERSPECTIVE
S35 AUTOFOCUS ANAMORPHIC LENS
Autofocus, precise tracking
Conventional anamorphic lenses often struggle with fast focus acquisition because they lack autofocus. The SIRUI 20mm T1.8 1.33x anamorphic lens is equipped with an STM stepper motor and offers fast, precise, and smooth autofocus.
It also supports eye tracking, which ensures a stable and precise focus even during high-speed shots or video recordings – to capture every crucial moment clearly.
It also supports eye tracking, which ensures a stable and precise focus even during high-speed shots or video recordings – to capture every crucial moment clearly.
Video recording
STM stepper motor, fast focusing & precise tracking
Eye tracking
Unlock a new level of photography and film production.
AF/MF Focus Modes
Seamlessly switch between autofocus and manual focus to flexibly respond to different shooting scenarios – achieving cinematic quality at a professional level.
20 mm wide-angle perspective
With a horizontal field of view equivalent to that of a 22mm full-frame lens, this wide-angle lens effortlessly captures vast landscapes, a breathtaking starry sky, and tight interiors.
20mm
Approximately 22mm
T1.8
0.4m
Wide angle
Horizontal equivalent to full format
Fast aperture
Minimum focusing distance
0.4m minimum focusing distance
The 0.4-meter minimum focusing distance breaks the technical limits of conventional anamorphic lenses. Combined with the bright aperture T1.8, it enhances depth effect and spatial perception – enabling visually immersive shots with impressive impact.
Widescreen cinema format
Thanks to the constant 1.33x compression factor, this lens produces an impressive 2.35:1 widescreen format in 16:9 mode – while simultaneously optimizing sensor usage for a truly immersive viewing experience.
Sensor cover
The lens with a maximum image circle of 37 mm is optimally suited for S35 sensors and covers almost all full-frame cameras. However, some vignetting may occur when used on full-frame cameras.
20mm Image Circle 37mm
Image Circle 43.3mm
Fast T1.8 aperture
The fast T1.8 aperture ensures that more light falls on the sensor, allowing the ISO value to be reduced and a clean night scene to be created. It also features 11 aperture blades. Even in low light conditions, you can achieve excellent images with a sharp subject, blurred background, and soft bokeh.
Outstanding optical performance
16 lenses
in 12 groups
in 12 groups
Cinema-quality image
Aspherical lens*1
Reduces weight and corrects chromatic aberration
Cylindrical lens*5
Controls the light distribution and precisely adjusts the aspect ratio
Choose your distinctive flare style
Blue or neutral
Classic Blue Flare
Ideal for sci-fi, mystery, and music video scenes
Neutral Flare
Adapts to light sources - for natural and warm commercial shots or portrait photography
Stunning bokeh
Unique lemon-shaped oval bokeh at large aperture
Image with sharp subject and dreamy bokeh
Compact and lightweight
With a weight of only 480 g and a compact length of 96 mm, this lens is perfect for handheld shots, on the vehicle, or gimbal-supported.
Handheld shooting
Gimbal
Uniform set design Seamless lens change
All lenses in the series have identical gear positions, a uniform 77mm filter thread, and consistent color tones. This ensures effortless lens changes, even when shooting with a gimbal, without the need to readjust accessories.
Convenient operation
Klick ON/OFF
AF/MF button
AFL-Taste
(E/Z/L-Mount)
(E/Z/L-Mount)
Stepless aperture or not
Switching between autofocus and manual focus
Lock/custom setting
Standard gears, 360° focusing paths
Electronic contacts for EXIF transfer
Housing made of aluminum alloy
Filter size 77 mm
Firmware update via Type-C
Native connections: E, X, Z, L, MFT – Compatible with common camera systems
AF Autofocus + MF Manual Focus Start your cinematic journey
compatibility
Scope of delivery
1
Lens2
Packaging box3
carrying bag4
carrying strap5
Front lens cap6
Rear lens cap7
Warranty card
Specifications
Model
20mm T1.8 1.33x Autofocus
Anamorphic cine lens
Anamorphic cine lens
Lens Format Coverage
S35/APS-C
Focal length
20 mm
Maximum aperture
T1.8
Minimum aperture
T22
Lens Structure
16 elements in 12 groups (including 5 lens-structured cylindrical lenses and 1 aspherical lens)
Aperturblende
11
Shooting distance
0.4m（1.31ft）～∞
Focusing method
Manual/Auto
Maximum magnification
1:15.4(V), 1:20.6(H)
F0V(APS-C)
38.974°(V), 73.906°(H), 78.324°(D)
filter thread
M77*P0.75
Focusable area
360°
Max diameter
∅86.4mm/3.4inch
Diameter of the focusing ring
∅86.4mm/3.4inch
Lens ring diameter
∅80mm/3.15inch
Motor
STM
AF/MF switch
Click (ON/OFF)
AFL-Taste
Length (mm/inch)
(without lens cap)
(without lens cap)
E: 90.95/3.58 Z: 92.95/3.66 X: 91.25/3.59
MFT: 89.75/3.53 L: 88.35/3.48
MFT: 89.75/3.53 L: 88.35/3.48
Weight (g/lb)
(without lens cap)
(without lens cap)
E: 489.3/1.08 Z: 501.1/1.1 X: 488.4/1.08
MFT: 479.5/1.06 L: 494.5/1.09
MFT: 479.5/1.06 L: 494.5/1.09
