“But I would use this lens more as a nighttime lens. For example, I shot night scenes in Osaka with it and was very satisfied with the results. It feels like real cinema.”
RICH Photography
Videographer & Creator, 47,700 subscribers
“Sirui has continued to keep this autofocus series oriented toward cinema. The gear rings are still in the same position on the 20mm and 40mm.”
Wes Perry
Commercial photographer, 38,700 subscribers
“Overall, this is an excellent lens in terms of handling and usability. Its compact size keeps it close to the camera body, it is very easy to use on a gimbal, and it has a very well-balanced center of gravity.”
Pascal Basel
Videographer, 214,000 subscribers
“The fact that Sirui is releasing a second autofocus-capable anamorphic lens relatively soon after the first model shows me that they are serious about it. This gives me hope that we will see more lenses of this kind in the future.”
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1.33x constant anamorphic ratio
In 16:9 shooting mode, the lens produces a widescreen aspect ratio of 2.35:1. This feature gives your footage a cinematic look, highlights fine details, and ensures accurate color reproduction - for professional-level productions
STM autofocus
An advanced STM motor provides fast, precise autofocus with eye detection. This keeps the subject in focus when taking photos or reliably tracks it when filming
Subject tracking
Eye focus
T1.8 fast aperture
The fast T1.8 aperture ensures sufficient light transmission even in low-light conditions and enables an extremely shallow depth of field with a strong bokeh effect to make the subject stand out
Blue flare vs. neutral flare
Two flare styles for different shooting situations: Blue flare is suitable for sci-fi, mystery, and music video scenes; neutral flare adapts to the color of the light source and is ideal for commercial, interview, and emotional shots
Blue flare
Neutral flare
Lightweight
Compatible with gimbals and camera rigs in cars, and also suitable for handheld shooting
Auto
Handheld
Gimbal
Distinctive bokeh
At wide-open aperture, the 40mm produces distinctive hexagonal bokeh. Stopped down to T2.4, both the 20mm and 40mm switch to the characteristic elliptical 1.33x bokeh, delivering the classic anamorphic look
Bokeh
Hexagonal / Elliptical Bokeh
Two focal lengths, one unified specification
All lenses in the series feature identical gear ring positions, a unified 77mm filter thread, and matching color tones. This makes it easy to switch lenses, even on a gimbal, without having to readjust accessories
Convenient operation
Click ON/OFF
Switch between clicked and declicked aperture settings for greater flexibility in photo and video.
AF/MF Button
Switch quickly between autofocus and manual focus at the touch of a button, adapting to different shooting situations.
AFL Button
Available in E/L-Mount for the 20mm and in E/L/Z/MFT-Mounts for the 40mm. A button locks the focus distance and prevents accidental adjustment.
360° focus throw
An extra-long focus throw enables finer manual control for precise, accurate focusing.
Electronic contacts for EXIF transmission
Built-in electronic contacts automatically transmit EXIF data for easy post-production management.
Aluminum body
A lightweight yet robust aluminum body for demanding shooting conditions.
77mm filter size
Both focal lengths share the same 77mm filter thread, allowing the same filters to be used for both lenses without additional purchases.
Firmware update via USB-C
Firmware updates can be easily performed via the USB-C port to unlock the latest features and improvements.
Motion picture
Street
Portrait
Landscape
Documentary
What's in the box
Single lens (20mm)
Lens x1
Pouch x1
Rear lens cap x1
Front lens cap x1
Strap x1
Warranty card x1
Single lens (40mm)
Lens x1
Pouch x1
Rear lens cap x1
Front lens cap x1
Strap x1
Warranty card x1
Specifications
Focal length
Model
20mm T1.8 1.33x Autofocus Anamorphic Cine Lens
40mm T1.8 1.33x Autofocus Anamorphic Cine Lens
Covered sensor format
S35/APS-C
S35/APS-C
Maximum aperture
T1.8
T1.8
Minimum aperture
T22
T22
Optical construction
16 elements in 12 groups (including 5 cylindrical lenses and 1 aspherical lens)
16 elements in 12 groups (including 5 cylindrical lenses and 1 aspherical lens)