SIRUI Astra Series 50mm, 75mm&100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (Z Mount, Blue Fl
SIRUI Astra Series 50mm, 75mm&100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (Z Mount, Blue Fl
The SIRUI Astra Series 50mm, 75mm & 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (Z Mount, Blue Flare) is suitable for Nikon Z mount mirrorless cameras and can be used for both video recording and photography. These three fixed-focal-length lenses (50mm, 75mm, and 100mm) use a constant 1.33× squeeze factor for a widescreen format without needing to crop the image and lose resolution. The high T1.8 aperture helps you shoot effectively in low-light environments and creates a shallow depth of field. The optical system projects an image circle for Full Frame and APS-C sensors. Autofocus is handled by a quiet STM stepping motor, and the front filter thread has a diameter of 67mm.
Key features of the SIRUI Astra Series 50mm, 75mm & 100mm T1.8 1.33X Full-frame Anamorphic Cine Lens Kit (Z Mount, Blue Flare)
- Three lenses with 50, 75, and 100mm focal lengths cover a wide range of cinematic shots
- Constant 1.33× squeeze factor creates a cinematic 2.35:1 aspect ratio without image cropping
- Aperture from T1.8 to T22 provides control over both depth of field and exposure
- Fast and quiet autofocus supports smooth focusing for both photos and videos
- Striking blue anamorphic flares create a characteristic look for your footage
- Oval bokeh and vertical background stretching create a typical anamorphic look
- Uniform colour rendering across all three lenses simplifies post-production
- Identical gear ring placement allows for quick lens changes
- Full-frame construction with Nikon Z mount
STM autofocus
The focusing system uses a quiet STM stepping motor for smooth operation during filming. The autofocus works quickly and precisely on Nikon Z mirrorless camera bodies for both portraits and dynamic shots. A switch on the barrel allows for quick changes between automatic and manual focus modes. Users can easily react to changing conditions on set without having to search through the camera menu.
Optical performance of the lenses
The optical system includes aspherical elements that reduce the overall size of the lens barrel and correct optical aberrations. These elements suppress distortion and maintain high sharpness across the entire frame, from the centre to the edges. Consistent colour rendering across different focal lengths simplifies subsequent post-production and colour matching of shots. The T1.8 aperture provides a shallow depth of field to isolate the main subject.
On-body controls
The barrel features an aperture ring with a switch for seamless or clicked operation. A programmable FN button on the lens body expands control options by allowing you to assign a selected function from the camera body. The aperture ring lock prevents accidental movement of the setting outside the selected range or the Auto position. The body also has a dual scale in metres and feet for precise manual focusing. The triple-sealed construction resists dust, dirt, and splashing water when working outdoors.
Accessory compatibility
The front of the barrel has a 67mm filter thread and an outer diameter of 72mm. The geared rings for follow focus and aperture are in the same position as other versions from the same series. This unified gear position speeds up lens changes on camera rigs without needing to readjust focusing systems. The lens can be combined with commonly available circular filters and LiDAR focusing systems.
Mount:
Nikon Z
Camera type:
Mirrorless
For sensor:
APS-C, Full Frame
Lens type:
Fixed focal length
Focal length:
50, 75 and 100mm
Aperture:
T1.8
Maximum aperture:
22
Filter diameter:
67mm
Specifications
Bayonet
Features
Functions
Dimensions
Specifications can be changed without notice. Images are for illustrative purposes only.
