SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare) lets you shoot video footage with an anamorphic effect on mirrorless cameras. This prime lens with a fixed 100mm focal length supports both Full Frame and APS-C sensors. The Leica L-mount design delivers images with a constant 1.33× squeeze factor. This gives users a widescreen cinematic 2.4:1 aspect ratio without the need for cropping and without any loss of resolution. The fast T1.8 aperture makes shooting in low-light conditions easy and helps to separate the subject from the background. The all-metal barrel withstands harsh weather conditions thanks to its protection against dust, dirt and rain.
Key features of the SIRUI Astra Series 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
- Constant squeeze factor of 1.33×
- Anamorphic optical system creates a cinematic 2.4:1 aspect ratio without image cropping
- Fast T1.8 aperture for shooting in low-light conditions
- Silent STM stepping motor ensures smooth focusing
- All-metal design resists dust and moisture
- Aperture ring lock prevents accidental rotation
- 67mm front thread supports standard filter use
- Compatible with Panasonic cameras
Anamorphic look
The optical system creates signature blue lens flares and an oval bokeh with vertically stretched background elements. This optical character gives videos a cinematic look directly in-camera. The lens maintains a constant squeeze ratio throughout the entire focusing range to eliminate anamorphic mumps. 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 video transitions. The system reliably tracks subjects in both dynamic shots and portrait work. An AF/MF switch on the lens body allows for quick focus mode changes. The silent focusing mechanism prevents motor noise from ruining your audio recordings and maintains stable operation.
Controls
The lens body features a programmable FN custom button that you can assign to selected functions. The aperture ring lets you switch between clicked and de-clicked smooth rotation. An Iris range lock prevents accidental setting changes when handling your gear. Dual distance scales in metres and feet make manual focusing and distance checking easier.
Unified design across the SIRUI Astra series
The positions of the focus and aperture gear rings match those of the other focal lengths in this series. This allows for quick lens changes on a rig without the need to readjust follow focus systems. Consistent colour rendering and tone make post-production colour grading easier. The unified placement of control elements shortens the time needed for scene preparation between shots.
Accessory compatibility
The front has a 67mm thread for standard filters, allowing for easy use 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 70.2cm. Compatibility with standard 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:
70.2cm
Durability:
Dust and moisture resistance
Specifications
Bayonet
Features
Functions
Dimensions
Weight
| Code: | SUR1i6 |
| Warranty: | 24 months |
| Links: | Producer's Website: |