NiSi Athena Prime 25mm T1.9 (RF-Mount)

Professional Full Frame Cinema Performance

The NiSi Athena Prime 25mm T1.9 is a high-performance wide-angle cinema lens designed for the Canon RF-mount. Engineered for full-frame sensors with a 46mm imaging circle, this lens delivers exceptional clarity with maximum micro-contrast control and ultra-low chromatic aberration. The fast T1.9 aperture provides excellent low-light performance and a shallow depth of field with soft, natural bokeh for beautiful background separation.

Precision Engineering for Filmmakers

Designed to meet the rigorous demands of professional cinematography, the Athena Prime series features minimal focus breathing. This ensures a consistent field of view when racking focus from the minimum distance to infinity. The focus ring offers 300 degrees of smooth rotation and includes fluorescent focal scales, allowing for precise and repeatable focus pulls even in low-light environments.

Seamless Production Workflow

Efficiency is at the core of the NiSi Athena Prime design. All lenses in the series are matched in weight and size, eliminating the need for rebalancing on gimbals or stabilizers when switching focal lengths. The standardized 77mm filter thread and uniform placement of aperture and focus rings allow for quick transitions between accessories. Additionally, the RF-mount version includes a drop-in filter mount, offering creative flexibility and a streamlined workflow for on-set filter management.