The Sigma Aizu Prime 21mm T1.3 LF Cinema Lens (ARRI PL, Feet) brings an expressive, organic character to wide-angle cinematography while maintaining the exceptional speed and consistency of Sigma's Aizu Prime series. Designed for full-frame and large-format cinema cameras, this 21mm prime combines expansive coverage with a remarkably fast T1.3 aperture, giving cinematographers greater creative control over available light, depth of field, and visual atmosphere.
Rather than pursuing an overly clinical image, the Aizu Prime series is designed to produce a moderately sharp, natural rendering with a distinctive cinematic character. The 21mm focal length captures broad environments and immersive perspectives while maintaining minimal distortion, making it an excellent choice for establishing shots, interiors, architecture, Steadicam work, and dynamic camera movement.
The ultrafast T1.3 maximum aperture provides outstanding flexibility in low-light environments while allowing filmmakers to create exceptionally shallow depth of field, even from a wide-angle perspective. This combination makes it possible to separate subjects from expansive backgrounds and create expressive images with greater dimensionality and visual depth.
Maintaining a consistent T1.3 aperture across the Aizu Prime family also makes the 21mm easy to integrate into multi-lens productions, providing cinematographers with consistent exposure characteristics and visual language when changing focal lengths. Its ARRI PL mount makes it well suited for integration with professional cinema camera systems and production workflows.
Combining a wide 21mm perspective, large-format coverage, minimal distortion, and the organic rendering of Sigma's Aizu series, the Sigma Aizu Prime 21mm T1.3 LF Cinema Lens is a premium creative tool for narrative filmmaking, commercials, music videos, and other productions where image character is just as important as technical performance.
Lens Metadata
Each ARRI PL-mount Aizu prime lens uses ZEISS eXtended technology that provides real-time lens metadata while shooting. It also lets you export distortion and shading correction data to assist in post and visual effects production. The PL-mount Aizu lenses also output Cooke/i data when used with a compatible lens mount.
Full-Frame Coverage
With an image circle of 46.3mm, Aizu primes cover not only full-frame and Super 35 sensors but are compatible with large-format camera options like ARRI ALEXA LF Open Gate and VistaVision.
Consistent Look Across Series
Offering a quietly elegant and natural look, all Aizu focal lengths produce a consistent look with minimal breathing and distortion and balanced color, contrast, and flare characteristics.
Impressive Close-Ups
Short minimum focus distances help you cozy up to your subject, creating impactful close-ups and adding visual tension.
Compact and Lightweight Design
Developed from the Sigma High-Speed Prime series, the Aizu lenses' cine-style design features a lightweight, compact form, 0.8 MOD gears that are compatible with professional lens control systems, and a support foot with both 1/4"-20 and 3/8"-16 threads. The durable housing has a wide 270° barrel rotation that enables precise focus pulls.
95mm Front Diameter
The front outside diameter of 95mm fits many pro matte boxes and lens shades.
Focus Marks in Feet
Focus distances are measured in feet, and like all marks on the Aizu lenses, use luminescent paint for easy visibility.
