Brilliant at T1.3: Forging new expressions.
Here begins a new benchmark for filmmaking.
Ronkonkoma, New York – SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan) is pleased to introduce 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.
1. As of June 2025, by Sigma.
Pricing and Availability
Available mounts: PL Mount, Sony E-mount
Supplied accessories: Cover Cine Lens Cap LCC-95 II, Rear Cap LCR III, Lens Support Foot SF-61
Launch date: August 2025
Retail price: $8299 USD
* Product appearance and specifications are subject to change.
* This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
Key Features
Expressive power for profound beauty
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.
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 lineup from 18mm to 125mm.
⌀46.3mm image circle
The large ⌀46.3mm image circle ensures full coverage not only for full-frame and Super 35 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 impactful depth to the imagery.
Compact. Precise. Reliable.
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.
Key Specifications
Common Specifications
- Available mounts: PL Mount, Sony E-mount
- Image circle: 46.3mm
| Product | Close Focus | Front Diam. | Length* | Weight* |
| 18mm T1.3 LF | TBD | |||
| 21mm T1.3 LF | TBD | |||
| 25mm T1.3 LF | 0.31 m / 1’0 | 95 mm / 3.7″ | 125 mm / 5″ | 1.7 kg / 3.6 lb |
| 27mm T1.3 LF | 0.33 m / 1’1 | 95 mm / 3.7″ | 125.4 mm / 5″ | 1.7 kg / 3.6 lb |
| 32mm T1.3 LF | 0.34 m / 1’2 | 95 mm / 3.7″ | 128.5 mm / 5.1″ | 1.7 kg / 3.7 lb |
| 35mm T1.3 LF | 0.35 m / 1’2 | 95 mm / 3.7″ | 128.6 mm / 5.1″ | 1.6 kg / 3.6 lb |
| 40mm T1.3 LF | 0.38 m / 1’3 | 95 mm / 3.7″ | 128.8 mm / 5.1″ | 1.6 kg / 3.5 lb |
| 50mm T1.3 LF | 0.48 m / 1’7 | 95 mm / 3.7″ | 126.3 mm / 5″ | 1.7 kg / 3.7 lb |
| 65mm T1.3 LF | 0.61 m / 2’0 | 95 mm / 3.7″ | 125 mm / 5″ | 1.6 kg / 3.6 lb |
| 75mm T1.3 LF | 0.73 m / 2’5 | 95 mm / 3.7″ | 128.1 mm / 5.1″ | 1.7 kg / 3.8 lb |
| 100mm T1.3 LF | TBD | |||
| 125mm T1.3 LF | TBD | |||
* The figures are for PL Mount
Accessories
Supplied: Common to 25-75mm
- Cover Cine Lens Cap LCC-95 II
- Rear Cap LCR III
- Lens Support Foot SF-61
Optional
- Mount Converter MC-31
Additional Information
Sigma America:
https://www.sigmaphoto.com/cine/aizu-primes
Sigma Corporation:
https://www.sigma-global.com/
