21mm T1.3 Aizu Prime

Capturing wide-angle scenes with the speed of a T1.3 aperture is no small feat—yet this 21mm lens does so without compromise. Its expansive field of view paired with ultra-fast light-gathering capabilities makes it a standout choice for dynamic environments, handheld work, and stylized storytelling where speed and spatial immersion are key. About Aizu Primes Sigma’s Aizu Prime series redefines practicality in cinema optics. As the world’s first large-format cine lens lineup to achieve a consistent T1.3 aperture across all focal lengths, Aizu Primes offer unmatched versatility and creative freedom. Designed exclusively for cinema and manufactured in Sigma’s state-of-the-art Aizu facility in Japan, these lenses deliver a beautifully balanced image—combining modern sharpness with a smooth, organic character. With compact, lightweight housings, extended data support, luminous engraved markings, and excellent close-focus performance, Aizu Primes are built for the demands of modern productions. Focus breathing is carefully suppressed, distortion is minimal, and performance remains consistent from 18mm to 125mm—setting a new standard for high-end cinematography. Explore the entire Aizu Prime line.