NiSi Athena 25mm T1.9 Cine Lens - E Mount
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Wex Photo VideoNiSi Athena 25mm T1.9 Cine Lens Large Aluminium
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Product Information
Full details
The NiSi Athena 25mm T1.9 Cine Lens is designed for professional filmmakers and cinematographers using E-mount systems who prioritize optical precision, consistent color rendition, and workflow efficiency. It offers a stunning, professional cinematic look with ultra-low chromatic aberration and minimal focus breathing, making it ideal for narrative storytelling and commercial productions; however, users should be aware that the manual-focus-only operation requires deliberate handling and experience with follow-focus systems.
All features
| Brand | NiSi |
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Extended Product Information
FAQs
Does this lens provide autofocus?
No, the NiSi Athena 25mm is a manual-focus-only cinema lens.
Can I use front-mounted filters?
Yes, the lens supports standard 77mm screw-on filters in addition to the rear drop-in filter mount.
Is the aperture ring de-clicked?
Yes, as a cinema lens, it features a smooth, de-clicked aperture ring for seamless exposure adjustments.
Are the focal scales visible in the dark?
Yes, the lens features fluorescent focal scales, making them easy to read in dimly lit sets.
Is this lens compatible with full-frame sensors?
Yes, the Athena series is designed to cover full-frame sensor formats.
What is the gear pitch of the focus and aperture rings?
The lens utilizes the industry-standard 0.8 pitch gears.
Troubleshooting
Visible light leaks in the footage
Check that the drop-in filter is fully seated and locked in the rear mount.
Focus gear is slipping on the follow-focus system
Ensure the gear pitch is set to 0.8 and check that the follow-focus motor is tightened securely against the lens housing.
Gimbal is struggling to stabilize after a lens swap
Verify that your gimbal settings are calibrated for the specific weight of the Athena series; even though sizes are similar, minor recalibration may be necessary for perfect balance.
Pros and Cons
Pros
- Ultra-low chromatic aberration ensures sharp, high-contrast imagery.
- Drop-in filter system significantly improves field workflow efficiency.
- Uniform physical design allows for seamless swapping on gimbal setups.
- Precise 300-degree focus rotation is ideal for accurate manual pulling.
- Fluorescent focal markings improve readability in low-light shooting environments.
Cons
- Manual focus only, which may be challenging for run-and-gun solo operators.
- The 77mm front filter thread may not match all existing professional matte box systems.
- Fixed T-stop design requires manual iris control, lacking electronic communication for some metadata.
Setup, Compatibility & Care
This lens is designed specifically for Sony E-mount cameras. When setting up, ensure the lens is securely locked into the mount. Because the lens uses standard cine-gearing (0.8 pitch), verify that your follow-focus gears are properly aligned with the rings to avoid slippage. For the drop-in filter mount, ensure that the filter is clicked firmly into place to avoid light leaks. Clean the front and rear elements with a professional-grade lens pen or microfiber cloth. When not in use, keep the lens in its provided protective case to prevent dust buildup on the rear drop-in slot, as the sensor-facing element is exposed when no filter is present.