NiSi 40mm ATHENA PRIME Full Frame Cinema Lens T1.9 (RF Mount)

The NiSi 40mm ATHENA PRIME T1.9 is a full-frame cinema prime built for the Canon RF Mount, engineered to match the weight, dimensions, and focus/iris ring positions of the rest of the Athena Prime series. Its T1.9 aperture gives strong background separation with soft, controlled bokeh, and its minimized focus breathing keeps framing steady through focus pulls. It's aimed at filmmakers building a full Athena Prime set who need lenses that swap without rebalancing a gimbal.

• Native Canon RF Mount: Full-frame ATHENA PRIME optics engineered specifically for this mount.
• T1.9 Maximum Aperture: Produces strong background separation and soft bokeh for atmospheric, shallow-depth shots.
• Minimized Focus Breathing: Holds a consistent field of view through focus pulls.
• Matched Series Dimensions: Shares weight, size, and focus/iris ring positions with the rest of the Athena Prime line for fast lens swaps without rebalancing a gimbal.
• 77mm Filter Thread / 80mm Clamp-On Size: Standardized across the series for shared accessories.
• 300° Focus Ring Rotation with Fluorescent Focal Scales: Gives precise manual focus control, including in low light.
• Rear Drop-In Filter Mount: Accepts ND and Mist filters directly behind the lens, protecting the front element during filter swaps.