NiSi Cine Lens Set Athena Prime Master (8 Lenses) G-Mount (Without Drop-In Filter)

NiSi Athena Prime Master (8 Lenses) G-Mount – 46mm Image Circle for Full-Frame and Large-Format Sensors

The NiSi Athena Cine Lens Set Athena Prime Master delivers a matched set of eight prime lenses in G-Mount, supplied without the Drop-In filter. Designed for filmmakers and videographers, this kit covers ultra-wide to portrait focal lengths and provides consistent optical characteristics across the range. The series features a 46mm image circle, making these lenses suitable for full-frame and large-format sensors.

Key optical features and performance

The Athena Prime lenses offer consistent T-stop ratings across the range for predictable exposure. Most mid-range focal lengths share a maximum aperture of T1.9 to provide pleasing background separation, while the widest and longest lenses have slightly smaller maximum apertures.

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

In addition, the series emphasizes optical clarity with ultra-low chromatic aberration and micro-contrast control, which helps reveal finer image details. The lenses are designed to minimize focus breathing, so the change in field of view when pulling focus from close focus distance to infinity remains very small.

Handling, gearing and focus control

The Athena Primes share mechanical and handling characteristics so you can maintain consistent operation across your kit. NiSi matched aperture and focus rings across the range to simplify lens swaps and repeatable camera moves.

• 300° focus rotation for precise focus pulls.
• Fluorescent focus scales in both imperial and metric units for clear markings in low light.
• Standard 0.8 mod focus and iris gears for compatibility with follow focus and matte box systems.
• All lenses are similar in weight, so you do not need to rebalance your gimbal when switching between Athena lenses.

Mounts, filters and rear filtration system

The Athena Prime series ships in multiple mount choices across NiSi’s lineup. For this specific kit, the lenses are G-Mount and are supplied without Drop-In filters.

• Available mount options across the series: ARRI PL, Canon RF, Sony E, Panasonic/Leica L, and Fuji G.
• RF-, L- and G-Mount lenses offer a Drop-In filter option in the lens design, though this particular set is delivered without Drop-In filters.
• The E-Mount is available in two versions: with and without a Drop-In filter.
• The PL-mount uses a rear filter solution rather than a Drop-In module.

Please note the following operational points for Drop-In and rear filters:

• Sony FX9 cameras cannot use the E-Mount with Drop-In filters.
• It is important to use the Drop-In clear filter on RF-, L-, G- and E-mount lenses, and the rear clear filter on PL-mount lenses, when required by the lens design in order to achieve infinity focus and obtain clear images.
• NiSi provides weather sealing for the Drop-In filter to protect the rear filtration system when used.

Filters and close-up options

All Athena lenses (except the 14mm) share a 77mm front filter thread, simplifying the use of threaded filters across the set. NiSi also offers a 77mm close-up lens that can reduce minimum focus distance to create strong macro effects; this accessory is sold separately.

This kit includes

• 1x NiSi Athena Prime 14mm T2.4 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 18mm T2.2 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 25mm T1.9 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 35mm T1.9 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 40mm T1.9 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 50mm T1.9 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 85mm T1.9 G-Mount (Without Drop-In Filter)
• 1x NiSi Athena Prime 135mm T2.2 G-Mount (Without Drop-In Filter)
• 1x NiSi Hardcase for 9pcs NiSi Athena Lenses

Technical specifications

Frequently asked questions

Question: Is this G-Mount kit supplied with Drop-In filters?
Answer: No. This specific NiSi Athena Prime Master kit is supplied in G-Mount without Drop-In filters. The Athena series does offer Drop-In filter options for RF, L and G mounts in general, but the lenses in this set do not include them.

Question: Can I use these lenses on full-frame or larger sensors?
Answer: Yes. The Athena primes have a 46mm image circle, which makes them suitable for full-frame and even large-format sensors as stated in the product information.

Question: Do I need to rebalance my gimbal when switching lenses in the Athena set?
Answer: No. All Athena Prime lenses are similar in weight and share matched balance characteristics, so you should not need to rebalance your gimbal when you swap lenses in this series.

Question: Which lenses share the same front filter thread and how do I use threaded filters?
Answer: Except for the 14mm lens, all Athena lenses in this set use a 77mm front filter thread. This common thread size simplifies the use of threaded ND or other filters across the six compatible lenses.

Question: What should I be aware of regarding Drop-In and rear filters for other mounts?
Answer: For Athena lenses equipped with Drop-In or rear filter systems, it is important to use the clear Drop-In or rear filter as specified (RF, L, G, E where applicable, and PL rear filter) to achieve infinity focus and clear images. Also note that Sony FX9 cannot use the E-Mount version with Drop-In filters.