NiSi Cine Lens Athena Prime 135mm T2.2 G-Mount (Without Drop-in Filter)

NiSi Athena Prime 135mm T2.2 G-Mount – 135mm portrait telephoto with T2.2 aperture (without drop-in filter)

This listing is for the NiSi Athena Prime 135mm T2.2 in G-Mount, supplied without the Drop-In filter. The lens belongs to the Athena Prime cine series and shares the same design philosophy and operational features as the rest of the range. It delivers a long portrait/telephoto focal length with a T2.2 maximum aperture for controlled depth of field and background separation.

Key optical features

The Athena Prime 135mm is part of a focal-length family that spans from ultra-wide 14mm to 135mm. Across the series, NiSi provides consistent light transmission values (T-stops) and an image circle large enough for full-frame and large-format sensors. Specifically:

• The 135mm lens has a maximum aperture of T2.2.
• The series covers focal lengths from 14mm to 135mm, including popular mid- and long-frame primes.
• The whole series produces an image circle of 46mm suitable for full-frame and larger sensors.

Mounts, filter system and this listing

The Athena Primes are available in multiple mounts. The series offers ARRI PL, Canon RF, Sony E, Panasonic/Leica L and Fuji G mount options. Some mounts provide a Drop-In filter option; others use a rear filter design.

• This specific 135mm is the G-Mount version and is sold without the Drop-In filter.
• RF-, L- and G-Mount lenses have a Drop-In filter option within the series.
• E-Mount lenses are available in two versions: with and without Drop-In filter.
• PL-mount lenses utilize a rear filter rather than a Drop-In system.

Consistency and handling across the series

NiSi designed the Athena Primes for predictable handling and fast lens changes on set. Expect matched ergonomics and consistent control positions that help speed up workflows.

• All lenses (except the 14mm) share a 77mm front filter thread, which simplifies use of front filters across most focal lengths.
• Aperture and focus rings are matched across the range for consistent feel and operation when switching lenses.
• All Athena Primes have a focus rotation of 300° for precise focus pulls.
• Focus scales are fluorescent and marked in both imperial and metric units to assist during low-light work and fast setups.
• The lenses use standard 0.8 mod focus and iris gears, ensuring compatibility with common follow focus and matte box systems.
• Most Athena Primes are similar in weight, so you typically do not need to rebalance a gimbal when swapping lenses within the series.

Optical control and performance notes

The Athena Prime series emphasizes low chromatic aberration and controlled micro-contrast for finer image detail. NiSi also engineered the series to minimize focus breathing so the field of view changes very little when pulling focus from close focus distances to infinity.

Drop-In filter considerations and weather sealing

The Athena series features a proprietary rear filtration system and Drop-In options on applicable mounts. NiSi provides weather sealing for the Drop-In filter assemblies.

• It is important to use the Drop-In clear filter on RF-, L-, G- and applicable E-mount variants, and the rear filter on PL-mount variants, to achieve infinity focus and maintain clear images.
• Note: the Sony FX9 camera cannot use the E-Mount version that includes Drop-In filters.

Accessories and close-up options

NiSi offers a 77mm close-up lens that reduces the minimum focus distance and creates strong macro effects. This close-up lens is sold separately and fits Athena Primes that share the 77mm front thread.

FAQ

Question: Is this 135mm Athena sold with the Drop-In filter?

Answer: No. This specific listing is for the G-Mount 135mm Athena Prime without the Drop-In filter. The series does offer Drop-In options for certain mounts, but this product is the non-Drop-In version.

Question: Will this lens reach infinity focus out of the box?

Answer: Yes, when used in its intended configuration. For RF-, L-, G- and E-mount Drop-In variants you must fit the Drop-In clear filter, and for PL-mount you must use the rear filter, to achieve correct infinity focus and clear images. This listing is the G-Mount without the Drop-In filter, so ensure your camera and accessory setup are correct for infinity focus.

Question: Can I use the Athena 135mm on a gimbal without rebalancing?

Answer: Generally yes. The Athena lenses are designed to be similar in weight so you typically do not need to rebalance a gimbal when switching between Athena lenses, though the 14mm is an exception in terms of front-thread size.

Question: Are the focus and aperture controls compatible with standard cinema accessories?

Answer: Yes. The lenses use standard 0.8 mod focus and iris gears and have matched aperture and focus ring positions across the series, making them compatible with common follow focus and matte box systems.

Question: Is there any special note regarding Sony cameras?

Answer: Yes. The Sony FX9 camera cannot use the E-Mount version of Athena lenses that include Drop-In filters. If you plan to use an FX9, select the correct mount/version accordingly.

Question: Can I get closer focusing or macro with this lens?

Answer: You can reduce the minimum focus distance and achieve stronger macro effects by using the NiSi 77mm close-up lens, which is sold separately and fits Athena lenses with the 77mm front thread.

If you need additional details about mount compatibility or Drop-In options for other mounts in the Athena series, contact us and we will help source the correct configuration for your camera system.