SIRUI Astra Series 50mm, 75mm&100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (L Mount, Neutral
SIRUI Astra Series 50mm, 75mm&100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (L Mount, Neutral
The SIRUI Astra Series 50mm, 75mm & 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (L Mount, Neutral Flare) captures video and photos on mirrorless cameras with a Leica L-mount. These 50mm, 75mm, and 100mm prime anamorphic lenses have a T1.8 aperture. Their optical system creates a widescreen cinematic image with neutral flare effects, complemented by oval bokeh with vertical background blur. The body has a diameter of 80mm and the front features a 67mm filter thread. The lenses work with both APS-C and Full Frame sensors, enabling creation with a wide aspect ratio of approximately 2.35:1.
Key features of the SIRUI Astra Series 50mm, 75mm&100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (L Mount, Neutral Flare)
- Three lenses with 50mm, 75mm, and 100mm focal lengths for flexible work
- A constant 1.33x squeeze factor creates a 2.35:1 widescreen cinematic aspect ratio without cropping the image
- Aperture from T1.8 to T22 allows for work in various lighting conditions
- Fast and quiet autofocus supports smooth focusing for both photography and filming
- Neutral anamorphic flares preserve the natural colour rendition of the image
- Oval bokeh and vertical background stretching enhance the anamorphic character of the shots
- Uniform colour rendition across all focal lengths simplifies lens changes and subsequent post-production
- Identical dimensions and gear ring placement enable quick lens changes on a rig
- Compatibility with full-frame cameras with an L-mount
Mount and compatibility
These prime lenses for mirrorless cameras with a Leica L-mount work with APS-C and Full Frame sensors. Users can mount them on compatible camera bodies without needing adapters. The fixed focal lengths provide narrower viewing angles, suitable for detailed shots, portraits, and cinematic scenes. You can use the lenses for both video and photography, and their uniform colour rendition makes them easy to combine with other lenses in the same series. The lens system includes an aspherical element, which corrects optical image distortion and helps to reduce the overall dimensions.
Focusing with STM drive
The autofocus system uses a quiet STM stepping motor. This technology provides fast and smooth focus transitions during dynamic scenes and static portraits. The focus precisely tracks the selected subject in the frame and minimises noise that could interfere with sound recording. Users can switch to manual focus using the dedicated AF/MF mechanical switch on the body.
Aperture and iris
The T1.8 aperture makes it easier to work in poor lighting conditions and in twilight. The aperture can be set from T1.8 to T22 and creates a soft oval bokeh in the background of the image with characteristic vertical blur. The built-in aperture ring offers the option to switch between smooth and stepped operation using the Click Aperture Control function, helping both photographers and videographers to change exposure smoothly.
Controls and construction
The metal barrel features an adjustable FN button for quick selection of assigned functions. The aperture ring lock prevents accidental adjustment when handling the equipment and maintains a stable exposure. A dual scale displays the focusing distance in both metres and feet. The geared rings are identically positioned on all lenses in the kit, speeding up changes without the need for tedious follow focus readjustment. The triple-protection design resists dust and moisture ingress when working in demanding outdoor environments and protects the optical elements from rain. A 67mm front thread allows for quick attachment of standard photographic filters.
Mount:
Leica L
Compatible cameras:
Panasonic
Lens type:
Prime
Focal length:
50, 75 and 100mm
Aperture:
T1.8
Maximum aperture:
22
Filter diameter:
67mm
Lens diameter:
80mm
For sensor:
APS-C, Full Frame
Features:
Dust and moisture resistance, for video (quiet motor), aperture ring
Specifications
Bayonet
Features
Functions
Dimensions
Specifications can be changed without notice. Images are for illustrative purposes only.
