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Silver cine lens with matte finish, focus and iris rings, filter holder attached

Nisi

Nisi Athena Prime 40mm T1.9 Cine Lens Leica L 46mm Image Circle

SKU CH-MC08-18CF9

Full-frame 40mm cine lens with T1.9 aperture and 46mm image circle for Leica L mount

  • Full-frame coverage with a 46mm image circle
  • Bright T1.9 aperture for shallow depth of field
  • 40mm focal length suited to natural perspective
  • Minimised focus breathing keeps framing consistent
  • Matched ring positions for quick lens changes

40mm T1.9 Full-Frame Cine Lens

The NiSi Athena Prime 40mm T1.9 is a full-frame cinema lens built for Leica L mount cameras. It covers a 46mm image circle, making it suitable for large-format sensors used in professional filmmaking. The lens integrates with the existing Athena Prime series, sharing consistent weight and synchronized focus and iris ring positions. This design allows seamless lens changes on set without rebalancing rigs or adjusting follow-focus gear.

T1.9 Aperture and 46mm Coverage

The fast T1.9 aperture provides shallow depth of field and strong low-light performance for cinematic subject separation. The 46mm image circle covers full-frame and larger sensor formats with room for in-camera stabilization or slight reframing. Focus breathing is minimized to maintain a consistent angle of view during rack focus pulls. Optical design targets high micro-contrast and low chromatic aberration for clean, detailed image rendition.

Matched Build and Included Filter Holder

The lens body matches the Athena Prime series in weight and ring placement, ensuring balance and accessory compatibility across focal lengths. Standardized gear rings speed up crew workflow when swapping lenses on matte boxes or follow-focus units. A dedicated filter holder is included, allowing quick attachment of diffusion or ND filters without front-thread size mismatches. This system approach reduces setup time on professional productions.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $986.99
Pricier than about 78% of the 2,570 comparable items (median $546.49).

Specifications

No published specifications for this item yet.

Questions about this item

Will the 40mm focal length and 46mm image circle cover my existing full-frame sensor without vignetting?

The lens provides a 46mm image circle that fully covers full-frame sensors, so the 40mm focal length will deliver edge-to-edge illumination on your current camera.

How can I verify the T1.9 aperture is transmitting light correctly after mounting?

Set the iris ring to T1.9, point at an even light source, and confirm the exposure meter matches the expected value for that stop; consistent readings across the focus range show the aperture is working as designed.

Does the package include the filter holder shown in the title, or must I buy it separately?

The supplied filter holder is included in the box; no separate purchase is required for that accessory.

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