Brilliant at T1.3: Forging new expressions. Here begins a new benchmark for filmmaking.
Introducing the Aizu Prime Line―the world's first lineup1 of large-format cinema lenses to achieve an aperture value of T1.3 across all focal lengths.
The lineup combines modern sharpness with an organic and naturally soft look, bringing rich texture and depth to visuals.
Boasting unparalleled brightness, refined expression, and reliable performance, the Aizu Prime Line embodies the proven technology and quality of “Made in Aizu, Japan” establishing the new standard.
The lineup of 12 lenses features a consistent T1.3 aperture across the full range from 18mm to 125mm. The initial release includes 8 lenses with focal lengths from 25mm to 75mm, covering core cinematic production needs.
A consistent T1.3 across all focal lengths
The T1.3 aperture enables exceptionally shallow depth of field and graceful bokeh, seamlessly separating the subject while preserving a natural sense of depth and dimensionality. This refined visual language draws the viewer into the frame with a subtle yet powerful presence.
Optical design for the demands of cinema
All lenses in the Aizu Prime lineup feature an optical system developed exclusively for cinema applications. While maintaining modern sharpness, they avoid rigid or harsh depictions—delivering a natural, organic look. They provide quiet elegance and depth to the image, with distortion and focus breathing carefully minimized to ensure visual consistency, even in dynamic scenes.
Huge perspective range coverage
The Aizu Prime Line is designed as a system to cover a wide range of focal lengths from 18mm to 125mm. Initially 8 core lenses ranging from 25mm to 75mm are being released, followed by 18mm and 21mm wide-angle lenses, and 100mm and 125mm telephoto lenses. This comprehensive system, covering from ultra-wide-angle to telephoto, is adaptable to diverse scenes and compositions, and supports a wide array of visual expressions.
Completely consistent look
Consistency of color balance, contrast, and flare characteristics ensures seamless integration between scenes, bringing a high level of harmony to the entire visual narrative across the entire lineup from 18mm to 125mm.
φ46.3mm image circle
The large φ46.3mm image circle ensures full coverage not only for full-frame and Super35 formats, but also for the latest large-format cameras such as the ARRI ALEXA LF Open Gate and VistaVision. This capability enables uncompromised filmmaking across a diverse range of projects.
High-impact close-up expression
The short minimum focusing distance enables striking close-up shots. By getting closer to the subject, the Aizu Prime lenses create visual tension and dramatic effects, adding depth to the imagery.
A compact design that unleashes creativity
Despite being built for large-format coverage and featuring an ultra-fast T1.3 aperture, the Aizu Prime lenses remain remarkably lightweight. This rare balance of exceptional speed and mobility offers the flexibility and creative freedom demanded by modern productions—from dolly and Steadicam to gimbal and handheld operation.
Precise operation and durability
The Aizu Prime lenses offer precise control, exceptional durability, and ease of maintenance. Despite its compact housing, it delivers unwavering reliability in demanding shooting environments. Every mechanical detail—from the wide focus rotation angle to the equal-pitch aperture ring—embodies the engineering expertise cultivated through the Sigma High Speed Prime series.
Compatible with the Cooke /i + ZEISS eXtended Data
The Aizu Prime lenses are compatible with Cooke /i + ZEISS eXtended Data, offering real-time lens metadata during shooting. It also enables the export of distortion and shading correction data, streamlining workflows for VFX productions.
| Focal Length |
50 mm |
| T-stop |
T1.3 - T22 |
| Number of Diaphragm Blades |
13 |
| Close Focus *1 |
0.48 m / 1'7 |
| Magnification Ratio |
1:7.1 |
| Image Circle |
46.3 mm |
| Front Diameter |
95 mm / 3.7″ |
| Filter size |
- |
| Length*2 |
PL Mount
126.3 mm / 5″
Sony E-mount
160.3 mm / 6.4″
|
| Weight *3 |
PL Mount
1.7 kg / 3.7 lb
Sony E-mount
1.8 kg / 3.9 lb
|
| Angle of View |
LF Open Gate *4
40.3°
Full Frame *5
39.6°
Super 35 *6
28°
|
| Focus Rotation |
270° |
| Iris Rotation |
70° |
| Lens Support Foot |
SF-61 |
| Metadata Compatibility |
PL Mount
Compatible with the Cooke /i + ZEISS eXtended Data output (via /i Technology-compatible lens mount or 4-pin LEMO connector)
Sony E-mount
Compatible with Sony E-mount communication protocol. Enables transmission and recording of lens metadata to supported camera bodies.
|
| Supplied Accessories |
Cover Cine Lens Cap (LCC-95 II)
Rear Cap (LCR III) * PL Mount or Sony E-mount
Lens Support Foot (SF-61) |
* 1 Close focus distance is measured from the image plane
* 2 Front to mount flange
* 3 Without lens support foot
* 4 Horizontal angle of view for ARRI LF Open Gate mode aperture (aspect ratio 3:2, dimensions 36.70mm × 25.54 mm / 1.445″ × 1.006″)
* 5 Horizontal angle of view for a full-frame cinema camera aperture (aspect ratio 1.5:1, dimensions 36 mm × 24 mm / 1.42″ × 0.94″)
* 6 Horizontal angle of view for an Super 35 cinema camera aperture (aspect ratio 1.33:1, dimensions 24.9 mm × 18.7 mm / 0.98″ × 0.74″)
