SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Neutral Flare)
SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Neutral Flare)
The SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Neutral Flare) lets you shoot anamorphic video on mirrorless cameras. This prime lens with a 100mm focal length supports both Full Frame and APS-C sensors. Designed with a Leica L mount, it delivers images with a constant 1.33× squeeze factor. This gives users a widescreen 2.4:1 cinematic aspect ratio without the need to crop the image and with no loss of resolution. A fast T1.8 aperture makes shooting in low-light conditions easy and helps isolate your subject from the background. The all-metal barrel resists adverse weather thanks to its dust, dirt and splash protection.
Key features of the SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Neutral Flare)
- Constant 1.33× squeeze factor
- Anamorphic optical system delivers a cinematic 2.4:1 aspect ratio without image cropping
- Fast T1.8 aperture for easy low-light shooting
- Quiet STM stepping motor ensures smooth focusing
- All-metal construction resists dust and moisture
- Aperture ring lock prevents accidental rotation
- Front 67mm filter thread supports standard filters
- Compatible with Panasonic cameras
Anamorphic look
The optical design produces neutral flares and an oval bokeh with a vertically stretched background. This optical character lends your footage a cinematic look straight out of the camera. The lens maintains a constant squeeze ratio throughout the entire focus range to eliminate lens breathing. An aspherical lens element effectively suppresses distortion while maintaining high sharpness from the centre to the edges of the frame.
STM autofocus
Fast and quiet autofocus uses an STM stepping motor optimised for smooth transitions in video. The system reliably tracks subjects in dynamic shots and portrait work. An AF/MF switch on the lens body allows for quick focus mode changes. The quiet focusing mechanism does not interfere with audio recording during shooting and ensures stable operation.
Controls
The body features a programmable FN Custom Button that you can assign to selected functions. The aperture ring can switch between clicked and smooth, de-clicked rotation. An Iris Range Lock prevents accidental setting changes during handling. Dual focus scales in metres and feet make manual focusing and distance checking easier.
Unified layout in the SIRUI Astra series
The position of the focus and aperture gears matches other focal lengths in this series. This enables quick lens changes on a rig without having to readjust follow focus systems. Consistent colour rendering and tone simplify colour grading in post-production. The identical placement of control elements shortens the time needed to set up the scene between shots.
Accessory compatibility
The front features a standard 67mm filter thread for easy attachment of ND or polarising filters. The outer diameter of the front barrel is 72mm, so it fits standard matte boxes. The minimum focusing distance is 70.3cm. Compatibility with common accessories simplifies integration into your existing filmmaking gear.
Mount:
Leica L
Camera type:
Mirrorless
Sensor size:
APS-C, Full Frame
Focal length:
100mm
Aperture:
T1.8
Filter diameter:
67mm
Weight:
0.705kg
Minimum focusing distance:
70.3cm
Weatherproofing:
Dust and moisture resistance
Specifications
Bayonet
Features
Functions
Dimensions
Weight
| Code: | SUR1i7 |
| Warranty: | 24 months |
| Links: | Producer's Website: |