NiSi Cine Lens Set Athena Prime L-Mount

NiSi Cine Lens Set Athena Prime L-Mount – Full-frame coverage with rear Drop-In filter system

The NiSi Athena Cine Lens Set for L-Mount gives filmmakers a matched set of prime lenses that work together for consistent handling and image characteristics. The kit focuses on practical features for cinema use, including a rear Drop-In filter solution on applicable mounts, matched gearing, and minimized focus breathing.

Key features at a glance

• Matched prime lenses for consistent handling and image character across the set.
• Rear Drop-In filter system on specific mounts for flexible filtration and creative control.
• Designed for full-frame and larger sensors with an image circle of 46mm.
• All lenses (except the 14mm) share the same 77mm filter thread for easy filter swaps.

Optical performance and apertures

The Athena Prime family covers a focal length range from 14mm ultra-wide to 135mm tele, offering options from super-wide to portrait focal lengths. The lenses use T-stop ratings to describe actual light transmission, which helps maintain consistent exposure when you change focal lengths.

Within the family, the following T-stops are specified:

• 25mm, 35mm, 40mm, 50mm and 85mm: maximum aperture T1.9.
• 18mm and 135mm: maximum aperture T2.2.
• 14mm: maximum aperture T2.4.

NiSi also highlights ultra-low chromatic aberration and micro-contrast control to preserve finer image detail and reduce color fringing.

Filter system and mount options

The series offers multiple mount options and a flexible rear filtration approach:

• Available mounts: ARRI PL, Canon RF, Sony E, Panasonic/Leica L and Fuji G.
• RF, L and G mounts: include a Drop-In filter option.
• E-Mount: available in two versions — with and without Drop-In filter.
• PL-Mount: uses a rear filter (not the Drop-In style).

Important mounting notes:

• Sony FX9 cannot use the E-Mount with Drop-In filters.
• To achieve infinity focus and clear images, you must use the Drop-In clear filter on RF, L, G and E mounts (when applicable), and the rear filter on PL mounts.
• NiSi provides weather sealing for the Drop-In filter to improve reliability in challenging conditions.

Handling, focus and gimbal workflow

The Athena Primes are designed for predictable cinema workflows. All lenses (except the 14mm) share a common filter thread and similar weights, so you generally do not need to rebalance a gimbal when you swap between Athena lenses. NiSi matched both aperture and focus ring positions across the set.

Key handling details:

• Focus rotation: 300° for precise focus pulls.
• Focus scales: fluorescent markings in both imperial and metric units for low-light visibility and international crews.
• Standard 0.8 mod focus and iris gears for compatibility with follow focus systems and matte boxes.

Optional accessories

To shorten minimum focus distance and create macro effects, NiSi offers a 77mm close-up lens (sold separately) that works with the Athena series lenses that accept 77mm filters.

What this kit includes

• 1x NiSi Athena Prime 14mm T2.4 L-Mount
• 1x NiSi Athena Prime 25mm T1.9 L-Mount
• 1x NiSi Athena Prime 35mm T1.9 L-Mount
• 1x NiSi Athena Prime 50mm T1.9 L-Mount
• 1x NiSi Athena Prime 85mm T1.9 L-Mount
• 1x NiSi Hardcase for 6 pcs NiSi Athena Lenses
• 1x NiSi Cine-filter 4x5,65" True Color Polarizer
• 1x NiSi Cine Filter 4x5,65" Black Mist 1/8

Technical specifications

Smart FAQ

Question: Will these lenses cover my full-frame or large-format sensor?
Answer: Yes. The Athena Prime series has an image circle of 46mm, which is suitable for full-frame and larger-format sensors.

Question: Which mounts offer the Drop-In filter option?
Answer: RF, L and G mounts include a Drop-In filter option. E-Mount is offered in two versions, with or without Drop-In filter, while the PL mount uses a rear filter.

Question: Can I use the E-Mount Drop-In version on a Sony FX9?
Answer: No. The Sony FX9 camera cannot use the E-Mount with Drop-In filters. Please choose the appropriate version or mount for your camera model.

Question: Do I need to change gimbal balance when swapping Athena lenses?
Answer: In most cases no. All Athena Prime lenses are similar in weight and do not require rebalancing when switching between lenses, which streamlines gimbal workflows. The 14mm is an exception to the shared filter thread and may differ physically.

Question: How do I ensure infinity focus and clear images when using the Drop-In system?
Answer: It is important to use the Drop-In clear filter on RF, L, G and applicable E-Mount lenses and the rear filter on PL-mount lenses to achieve infinity focus and clear images.

Question: Are follow focus systems compatible with these lenses?
Answer: Yes. NiSi Athena Primes use standard 0.8 mod focus and iris gears, making them compatible with common follow focus and matte box systems.