NiSi Cine Lens Athena Prime 18mm T2.2 E-Mount

NiSi Cine Lens Athena Prime 18mm T2.2 E-Mount — 18mm T2.2 wide-angle with optional Drop-In filter

The NiSi Athena Prime 18mm T2.2 in Sony E-mount is part of the Athena Cine Lens series, developed for cinematographers and videographers who require consistent optics across a full set of primes. This 18mm prime delivers the series’ characteristic wide-angle perspective with a maximum aperture of T2.2 and is available in E-mount versions both with and without the proprietary Drop-In filter option.

Designed for consistent cinematic workflows

This lens follows the Athena design philosophy: matched focus and aperture ring positions, the same gear mod across the range, and similar weight across lenses. You can switch lenses without rebalancing a gimbal, and both the aperture and focus rings are matched to maintain a consistent physical workflow when changing focal lengths.

Optical and mechanical highlights

• Maximum aperture: T2.2 on the 18mm lens, matching the series’ aperture design for consistent exposure handling across the set.
• Part of a focal range that spans 14mm to 135mm, covering ultra-wide to portrait-length options within the Athena lineup.
• Image circle: 46mm, making the lens suitable for full-frame sensors and many large-format systems.
• Ultra-low chromatic aberration and controlled micro-contrast for finer image detail across the frame.
• Minimized focus breathing to keep field-of-view changes very small when adjusting focus from near to infinity.
• Focus rotation: 300° for precise focus pulls, with fluorescent focus scales displayed in both imperial and metric units.
• Standard 0.8 mod focus and iris gears to ensure broad compatibility with follow focus and matte box systems.
• Filter thread: the Athena series uses 77mm front threads on all lenses except the 14mm; the 18mm shares this 77mm thread.

Drop-In / rear filtration system

The Athena series offers a proprietary rear filtration solution to increase creative flexibility. Mount-specific details from the series apply to the 18mm E-mount variant:

• RF, L and G mounts: feature a Drop-In filter option.
• E-mount: offered in two versions — one with the Drop-In filter option and one without.
• PL-mount: uses a rear filter.
• NiSi supplies weather sealing for the Drop-In filter to protect the filtration module in challenging conditions.

Important notes:

• Sony FX9 cameras cannot use the E-mount version with Drop-In filters.
• To achieve infinity focus and obtain 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-mount lenses.

Accessories and compatibility

The NiSi Athena ecosystem supports practical production needs:

• The lenses share matched aperture and focus ring placement to speed lens swaps and maintain rig balance.
• All Athena lenses are similar in weight, reducing the need to rebalance gimbals when switching lenses within the set.
• NiSi offers a 77mm close-up lens (sold separately) that reduces minimum focus distance for macro-style shots when needed.

Who this lens is for

The 18mm T2.2 E-mount Athena Prime works well for filmmakers needing a consistent wide-angle prime that integrates with a matched prime set. The lens suits productions that demand matched handling, low focus breathing, and compatibility with industry-standard follow focus and matte box systems.

FAQ

Question: Does the E-mount 18mm come with a Drop-In filter by default?
Answer: The E-mount 18mm Athena Prime is offered in two versions: one with the Drop-In filter option and one without. Check the specific product listing to confirm which version you are purchasing.

Question: Will the E-mount Drop-In option work on my Sony FX9?
Answer: No. The Sony FX9 cannot use the E-mount version with Drop-In filters. If you shoot on an FX9, select the E-mount version without Drop-In or confirm an alternative workflow.

Question: Do I need to use a clear Drop-In or rear filter to reach infinity focus?
Answer: Yes. To achieve infinity focus and obtain clear images, the Drop-In clear filter must be used on RF, L, G and applicable E-mount lenses, while the PL-mount requires the rear filter.

Question: Will I need to rebalance my gimbal when I swap Athena lenses?
Answer: Generally no. All NiSi Athena Prime lenses are similar in weight, which removes the need to rebalance a gimbal when changing lenses within the series.

Question: Can I create macro shots with the 18mm Athena Prime?
Answer: Yes—you can use the NiSi 77mm close-up lens (sold separately) to reduce minimum focus distance and achieve macro-like effects with the Athena primes that share the 77mm thread.