“But I’d use this lens more as a night lens. For example, I took night shots in Osaka with it and was very pleased with the results. It feels like real cinema.”
RICH Photography
Videographer & Creator, 47,700 subscribers
“Sirui has continued to keep this autofocus series cinema-oriented. The gear rings are still in the same position on both the 20mm and 40mm.”
Wes Perry
Commercial Photographer, 38,700 subscribers
“Overall, this is an excellent lens in terms of handling and ease of use. Its compact size keeps it close to the camera body, it’s 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 anamorphic lens relatively soon after the first tells me they’re serious. It gives me hope that we’ll see more lenses like this in the future.”
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1.33x Constant Anamorphic Ratio
The lens produces a 2.35:1 widescreen aspect ratio in 16:9 shooting mode. This feature gives your footage a cinematic look, highlights fine details, and delivers accurate color reproduction for professional-grade productions
STM Autofocus
An advanced STM motor provides fast, precise autofocus with eye detection. This keeps the subject in sharp focus when taking photos and reliably tracks it when filming
Object Tracking
Eye Focus
Fast T1.8 Aperture
The fast T1.8 aperture provides ample light 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 scenarios: 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
Striking Bokeh
At wide apertures, the 40mm produces a distinctive hexagonal bokeh. Stopped down to T2.4, both the 20mm and 40mm shift 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 uniform 77mm filter thread, and matched color tones. This makes it easy to change lenses, even on a gimbal, without readjusting accessories.
Easy operation
Click ON/OFF
Switch between clicked and declicked aperture settings for greater flexibility in photo and video.
AF/MF button
Quickly switch between autofocus and manual focus at the touch of a button to suit different shooting situations.
AFL button
Available in E/L mount for the 20mm and 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 contact for EXIF transmission
Built-in electronic contacts automatically transmit EXIF data for easy post-production management.
Aluminum body
A lightweight yet durable aluminum body for demanding shooting conditions.
77mm filter size
Both focal lengths share the same 77mm filter thread, so the same filters can be used on both lenses without an additional purchase.
Firmware update via USB-C
Firmware updates are easy to perform via the USB-C port, unlocking the latest features and improvements.
Motion picture
Street
Portrait
Landscape
Documentary
What's included
Single lens (20mm)
Lens x1
Pouch x1
Rear lens cap x1
Front lens cap x1
Carrying strap x1
Warranty card x1
Single lens (40mm)
Lens x1
Pouch x1
Rear lens cap x1
Front lens cap x1
Carrying 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
Lens 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)