21mm T1.3 LF

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.

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 minimised to ensure visual consistency, even in dynamic scenes.

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.

Consistency of colour 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.

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.

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.

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.

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.

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.

MOUNT CONVERTER MC-31 Sigma MOUNT CONVERTER MC-31 allows PL mount lenses to be used on L-Mount cameras.