NiSi Cine Lens Set Athena Prime E-Mount (Without Drop-In Filter)

NiSi Cine Lens Set Athena Prime E-Mount — 5 Prime Lenses T1.9–T2.4 (Without Drop-In Filter)

This NiSi Athena Prime cine lens kit for E‑Mount gives filmmakers a matched set of five primes that cover ultra-wide to portrait focal lengths. It ships without the Drop‑In filter option for the E‑Mount, and includes protective and filter accessories to support a variety of shooting scenarios.

Lens range and apertures

The series covers focal lengths from 14mm up to 135mm in the full Athena family. This specific E‑Mount kit contains five lenses that span essential focal lengths for narrative and documentary work. The lenses in the kit provide consistent light transmission across the set, which helps maintain exposure when you change lenses during a shoot.

• The included focal lengths: 14mm, 25mm, 35mm, 50mm and 85mm.
• Maximum T-stops for the series: 25/35/40/50 & 85mm are T1.9; 18mm and 135mm are T2.2; the 14mm is T2.4.

Image circle and mount compatibility

The Athena design provides an image circle of 46mm. Therefore, the lenses suit full‑frame sensors and can also work with larger format sensors in many configurations. NiSi offers the Athena Prime series in several mount options, and the lenses are available in the following mounts:

• ARRI PL
• Canon RF
• Sony E
• Panasonic/Leica L
• Fuji G

Note that the E‑Mount is available in two versions across the Athena range: with Drop‑In filter and without Drop‑In filter. This kit uses the E‑Mount version without the Drop‑In filter.

Filter system and Drop‑In notes

The Athena series features a proprietary rear filtration system and offers Drop‑In filter capability on several mounts. However, this particular E‑Mount set is supplied without the Drop‑In filter.

• RF, L and G mounts have a Drop‑In filter option.
• PL mount uses a rear filter.
• E‑Mount lenses come in two versions; this kit contains the E‑Mount without the Drop‑In filter.

Important: NiSi recommends using the Drop‑In clear filter on RF, L, G and E mounts and the rear filter on PL mount to achieve infinity focus and a clear image. Also note that the Sony FX9 cannot use the E‑Mount with Drop‑In filters.

NiSi provides weather sealing for the Drop‑In filter system where applicable.

Handling, focus and gear compatibility

The Athena primes share mechanical design traits that speed up lens swaps and follow‑focus setup on set.

• All lenses (except the 14mm) share the same 77mm front filter thread.
• Aperture and focus rings are matched across the range for consistent operation.
• Focus rotation is 300° on each lens, enabling precise focus pulls.
• Focus scales are fluorescent and display both imperial and metric units for accurate marks in low light.
• Both focus and iris rings use a standard 0.8 mod gear, compatible with most follow focus and matte box systems.
• All Athena Prime lenses are similar in weight, so you generally do not need to rebalance a gimbal when swapping lenses in the series.

Optical characteristics

The Athena design aims to control common optical issues while preserving fine image detail. The series offers:

• Ultra‑low chromatic aberration control.
• Micro‑contrast control for finer image details.
• Minimized focus breathing so the change in field of view when racking focus remains extremely small.

Accessories and optional items

NiSi supplies a 77mm close‑up lens option (sold separately) to reduce minimum focus distance for macro effects. This kit also includes protective and creative filtration accessories as listed below.

What this kit includes

• 1x NiSi Athena Prime 14mm T2.4 E‑Mount (Without Drop‑In Filter)
• 1x NiSi Athena Prime 25mm T1.9 E‑Mount (Without Drop‑In Filter)
• 1x NiSi Athena Prime 35mm T1.9 E‑Mount (Without Drop‑In Filter)
• 1x NiSi Athena Prime 50mm T1.9 E‑Mount (Without Drop‑In Filter)
• 1x NiSi Athena Prime 85mm T1.9 E‑Mount (Without Drop‑In Filter)
• 1x NiSi Hardcase for 6pcs NiSi Athena Lenses
• 1x NiSi Cine‑filter 4x5.65" True Color Polarizer
• 1x NiSi Cine Filter 4x5.65" Black Mist 1/8

Technical specifications

FAQ

Question: Does this E‑Mount kit include the Drop‑In filter system?
Answer: No. This specific kit is the E‑Mount version supplied without the Drop‑In filter. NiSi offers E‑Mount lenses in two versions, one with and one without the Drop‑In option.

Question: Will these lenses focus to infinity without additional filters?
Answer: To achieve reliable infinity focus and maximum image clarity, NiSi recommends using the Drop‑In clear filter on RF, L, G and E mounts and the rear filter on PL mount. If you use an E‑Mount lens without the Drop‑In clear filter, check your camera and lens combination for infinity focus performance before critical shoots.

Question: Can I swap between Athena lenses on a gimbal without rebalancing?
Answer: Yes. All Athena Prime lenses are similar in weight, which means you typically do not need to rebalance your gimbal when switching lenses within the series. Still, verify balance on your specific rig after a lens change.

Question: Is the Athena E‑Mount with Drop‑In compatible with a Sony FX9 camera?
Answer: No. The Sony FX9 camera cannot use the E‑Mount version that includes Drop‑In filters. If you need Drop‑In functionality, confirm camera compatibility before purchase.