The Sigma Aizu Prime 21mm T1.3 LF Cinema Lens (Sony E, Feet) brings the distinctive character of Sigma's Aizu Prime series to full-frame and large-format Sony E-mount cinema systems. Combining an expansive 21mm focal length with an ultrafast T1.3 aperture, this wide-angle cinema prime is designed for filmmakers seeking expressive imagery, exceptional depth-of-field control, and an organic visual character.
The Aizu Prime series delivers a moderately sharp, natural rendering that prioritizes cinematic expression rather than an overly clinical appearance. At 21mm, the lens provides a broad field of view with minimal distortion, making it especially useful for establishing shots, interiors, environmental portraits, handheld work, gimbal shots, and dynamic camera movement.
Its exceptionally fast T1.3 maximum aperture gives cinematographers greater flexibility when working in low-light environments while enabling remarkably shallow depth of field for a wide-angle lens. This allows subjects to remain visually separated from their surroundings while preserving the immersive perspective and sense of space associated with the 21mm focal length.
Designed with full-frame and large-format coverage, the lens is well suited for professional Sony E-mount cinema and filmmaking workflows. Maintaining a consistent T1.3 aperture throughout the Aizu Prime series also helps provide a cohesive visual language and predictable exposure when switching between focal lengths during production.
Combining wide-angle coverage, minimal distortion, ultrafast T1.3 performance, and Sigma's organic Aizu rendering, the Sigma Aizu Prime 21mm T1.3 LF Cinema Lens for Sony E-mount is a versatile creative option for narrative films, commercials, music videos, and other cinematic productions where image character and visual expression are essential.
Lens Metadata
Each Sony E-mount Aizu prime lens uses Sony 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.
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.
