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NiSi Athena Prime 85mm T1.9 E-Mount Cine Lens (No Drop-In Filter)
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| Lens mount | Sony E |
| Lens Design | Prime Lenses |
| Lens focus length, mm | 85 |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Lens type | CINEMA |
| Maximum Aperture | T1.9 |
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NiSi Athena Prime Cine Lens Series
The NiSi Athena Prime cine lenses cover a focal length range from 14 mm ultra-wide angle to 85 mm, including both ultra-wide and portrait focal lengths. This range provides exceptional versatility, ideal for various shooting scenarios and capturing a wide variety of subjects.
Optical Performance and Aperture
These lenses feature T-stop ratings that measure the actual light transmission through the lens, ensuring consistent exposure across all focal lengths. The 85 mm lens has a maximum aperture of T1.9, allowing for a soft bokeh effect and beautiful background separation. The image circle diameter is an impressive 46 mm, making these lenses suitable for full-frame and large-format sensors.
Mount Options and Optical Quality
The Athena Prime series is available in ARRI PL, Canon RF, Sony E, Panasonic/Leica L, and Fuji G mounts. They offer exceptionally low chromatic aberration and micro-contrast control, delivering unparalleled image quality with fine detail resolution.
Focus Breathing Minimization
Athena Prime lenses are engineered to minimize focus breathing, meaning changes in the field of view when adjusting focus from minimum focus distance to infinity are very small, regardless of focal length or aperture setting.
Rear Filter System
The Athena Prime 85mm E-mount lens is available without the Drop-In filter system. For other mounts, the series features a patented Drop-In filter mount system providing greater flexibility and creative control. Note that to achieve infinity focus and sharp images, it is important to use a clear Drop-In filter for RF, L, G, and E mounts, and a rear filter for PL mount lenses.
Consistency and Handling
All NiSi Athena Prime lenses have similar weight, so switching lenses does not require rebalancing on a gimbal. All lenses share the same 77 mm filter thread size. Aperture and focus rings are standardized across the range.
They feature 300° focus rotation and fluorescent focus scales marked in both imperial and metric units for precise focusing.
Compatibility and Accessories
Designed with both optical performance and usability in mind, these lenses have standard 0.8 mod focus and aperture gears, making them compatible with a wide range of follow focus and matte box systems.
NiSi also offers a 77 mm close-up lens (sold separately) to reduce minimum focus distance and create excellent macro effects.
