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The gunmetal gray X-mount Night Walker 55mm T1.2 S35 Cine Lens from Sirui offers an ultrafast T1.2 maximum aperture that is ideal for low-light capture. Designed to cover Super35/APS-C camera sensors, this prime lens features a lightweight, compact design with high image quality, cine-style gearings, and minimal breathing. The color tone, gear position, and size are consistent across the series, providing a unified look and enabling quick lens changes when using matte boxes and other accessories.
Ideal for Low-Light Shooting
The maximum T1.2 aperture enables you to capture low-light scenes using lower camera ISO settings.
Ideal for run-and-gun filmmakers.
Longer Prime
This longer 55mm lens in the Night Walker series is ideal for close-ups and portrait shots.
High Optical Performance
ED (extra-low dispersion) and high refractive index glass elements contribute to this lens' high optical quality.
Focus breathing is minimal, and aberration is strictly controlled.
Common Design Features
Lenses in the Sirui Night Walker cine lens series share common focus and iris gear ring positions.
Enables quick lens changes by reducing the need for follow focus units or iris motors to be repositioned.
Compact Form
This prime lens features a compact, lightweight design.
The aluminum alloy construction helps to protect the inner optical elements.
Focus Marks
Focus markings and measurements are provided in both feet and meters.
Sirui Nightwalker 55mm T1.2 S35 Cine Specs
Key Specs
Focal Length
55mm
Maximum Aperture
T1.2
Lens Mount
FUJIFILM X
Lens Format Coverage
Super35/APS-C (34 mm Image Circle)
Filter Thread
67 mm x 0.75
Image Stabilization
No
Focal Length
55mm
Maximum Aperture
T1.2
Minimum Aperture
T16
Lens Mount
FUJIFILM X
Lens Format Coverage
Super35/APS-C (34 mm Image Circle)
Focus Scales
Metric, Imperial
Optical Design
11 Elements in 10 Groups
Filter Thread
67 mm x 0.75
Minimum Focus Distance
23.6" / 60 cm
Aperture/Iris Blades
12
Image Stabilization
No
Gear Standard
0.8 MOD
Gear Rotation
Focus: 270°
Diameter
Maximum: 3.1" / 79 mm Focus Ring: 3.1" / 77.6 mm
Length
3.3" / 83.7 mm
Weight
1.3 lb / 585 g
Packaging Info
Package Weight
2.26 lb
Box Dimensions (LxWxH)
8 x 5.2 x 5.1"
Sirui Nightwalker 55mm T1.2 S35 Cine Reviews
Terrific Budget Cinema Lenses
By Hugh
Rated 5 out of 5
Date: 2025-06-07
I purchased the entire five lens set for MFT and I could not be happier. They are well built, consistent in handling quality and are a dream to use. Even wide open the images are sharp. Many people have tested these lenses wide open on focus charts and have indicated soft corners. Well, I don't video focus charts. I video movement and action and the images look terrific when used across the entire range of codecs and resolutions with my Panasonic Lumix GH6, Gh7, and G9 II cameras. The colors look great and these lenses give a very filmic quality. I admit, 100%, I like this lens set better than the Rokinon DS, DSX line and Mitakon Zhongyi lenses.
See any errors on this page?
Can I swap the lens mount myself on the Sirui ...
Can I swap the lens mount myself on the Sirui Night Walker lenses?
Asked by: David
The Sirui Night Walker 55mm T1.2 S35 Cine Lenses do not have swappable lens mounts.
Answered by: Jonathan S
Date published: 2023-11-21
Will this present the FF equivalent of 110mm?
Will this present the FF equivalent of 110mm?
Asked by: Jared
I understand that, but this is a MFT lens. Would this mean that it has a 110mm view?
Answered by: Jared
Date published: 2024-01-08
Is this an autofocus lens?
Is this an autofocus lens?
Asked by: Todd
The Sirui Night Walker 55mm T1.2 S35 Cine Lens (E-Mount, Black) is manual focus only.
