SIRUI Astra Series 50mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
SIRUI Astra Series 50mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
The SIRUI Astra Series 50mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare) is used for shooting video with an anamorphic effect on mirrorless cameras with a Leica L mount. This 50mm fixed focal length optical instrument covers both Full Frame and APS-C sensors. The 1.33× squeeze factor design creates a widescreen 2.4:1 cinematic aspect ratio without the need to crop the image and lose resolution. The minimum focusing distance is 50.2cm. The T1.8 aperture makes it easier to work in low light conditions and helps to separate the subject from the background using a shallow depth of field.
Key Features of the SIRUI Astra Series 50mm T1.8 1.33X Full-frame Anamorphic Cine Lens (L Mount, Blue Flare)
- 1.33× squeeze factor design creates a 2.4:1 widescreen image format
- T1.8 aperture makes it easier to shoot in low light
- The metal body has integrated seals to prevent dust and rain from getting in
- Selectable aperture mode offers smooth, clickless operation
- The position of the focus ring is unified with other lenses in the series
- The lens supports fast focusing with a quiet STM motor
- Compatible with Panasonic cameras
Optical Properties and Consistent Rendition
The optical system with an aspherical element suppresses distortion and maintains high sharpness across the entire frame. The lens generates distinctive blue horizontal flares and creates an oval light bokeh along with a vertical background blur. The T1.8 aperture makes it easier to work in low light conditions and helps separate the subject from the background. The colour rendition and image toning match other focal lengths in the same product line. The uniform look of the footage simplifies post-production and colour matching of videos from different focal lengths. Support for both Full Frame and APS-C sensors expands the possibilities for use on different types of cameras. The similar weight and dimensions of the individual lenses in the set make for quick changes on stabilisers without the need for rebalancing.
Autofocus and Controls
The focus drive uses a quiet STM stepper motor that responds quickly and smoothly when shooting dynamic scenes and portraits. The autofocus system reduces noise and prevents interference with the video's audio track. Users can switch between automatic and manual modes using a dedicated switch on the barrel. The body includes a programmable FN button to assign selected functions and an Iris range Lock. The aperture mechanism offers switchable operation with a smooth or clicking mode for precise exposure adjustment. Dual scales in metres and feet facilitate manual focusing and collaboration with LiDAR systems.
Body Durability for the SIRUI Astra Series 50mm Lens
The construction includes sealing elements at critical points to prevent dirt from entering the internal parts. Triple protection shields the optics from dust, moisture, dirt and splashing water in adverse weather. The metal Leica L mount provides a firm connection to the body of compatible cameras. The all-metal construction increases overall durability for everyday use in the field. The uniform positioning of the gear rings makes it easy to quickly swap lenses within a set without having to readjust the follow focus. The front thread has a diameter of 67mm for installing standard filters, while the outer diameter of the front section is 72mm.
Mount:
Leica L
Camera Type:
Mirrorless
Compatible with cameras:
Panasonic A6500, A6600, A7 III, A7R III, A7R IV, A9 II, ZV-1, ZV-E10, A7 IV, A1, A9 III and A6700
For sensor:
APS-C, Full Frame
Lens type:
Fixed focal length
Focal length:
50mm
Aperture:
T1.8
Filter diameter:
67mm
Minimum focusing distance:
50.2cm
Specifications
Bayonet
Features
Functions
Dimensions
Weight
Specifications can be changed without notice. Images are for illustrative purposes only.
