NiSi Cine Drop-In Filter ND4/Polarizer

NiSi Cine Drop-In Filter ND4/Polarizer – 2-stop ND and Polariser for NiSi ATHENA lenses

The NiSi Cine Drop-In Filter ND4/Polarizer combines a 2-stop neutral density with a polarising function designed specifically for NiSi ATHENA full-frame prime lenses that feature a drop-in filter slot. It darkens the image by two stops, and at the same time reduces reflections from non-metallic surfaces to help you capture cleaner, more saturated cinematic images.

Key benefits at a glance

• Designed for use with NiSi ATHENA full-frame prime lenses featuring a drop-in filter slot
• Darkens the overall image by 2 stop
• Enables slower shutter speed utilization
• Facilitates wider aperture settings
• Delivers full-spectrum neutrality for authentic, true-to-life outcomes
• Enhanced with NiSi Optical Nano Coating technology
• Crafted from high-quality optical glass
• Encased in a lightweight yet robust aluminum frame
• Comes with a convenient carry case for easy transportation

What the ND4 (2-stop) does for your image

The ND4 element reduces incoming light by two stops, so you can use slower shutter speeds or wider apertures in brighter conditions. Consequently, you can capture motion blur when desired or isolate subjects with a shallower depth of field. In short, the ND function expands creative control over exposure and motion rendering without changing other optical characteristics.

How the polariser improves your shots

The polarising component filters out light that has become polarised by reflection from non-metallic surfaces. Therefore, it reduces unwanted glare and reflections while increasing perceived saturation in skies and foliage. As a result, you gain clearer scenes and richer colours when shooting landscapes or outdoor scenes where reflections and specular highlights can distract.

Optical quality and construction

NiSi builds this drop-in filter with high-quality optical glass and applies NiSi Optical Nano Coating technology. Together, they ensure full-spectrum neutrality so your colours remain true-to-life and free from common colour shifts. Moreover, the glass sits inside a lightweight but robust aluminium frame, making the filter durable for field use while keeping it easy to handle.

Fit, convenience and transport

The filter fits snugly into the Athena lenses’ drop-in filter slot and becomes an integrated part of the lens’ optical chain. For added convenience, NiSi includes a carry case so you can store and transport the filter safely between shoots and locations.

Compatibility

Compatible with NiSi ATHENA Full Frame Primes that include a drop-in filter slot. Use it whenever you need a combined ND and polariser solution specifically tailored for Athena lenses.

Smart FAQ

Question: Which lenses work with this filter?
Answer: The NiSi Cine Drop-In Filter ND4/Polarizer is compatible with NiSi ATHENA full-frame prime lenses that feature a drop-in filter slot.

Question: How strong is the ND effect?
Answer: The filter darkens the image by two stops (ND4), enabling slower shutter speeds or wider apertures in brighter conditions.

Question: Will the polariser affect colours or increase contrast?
Answer: The polariser reduces reflections from non-metallic surfaces and can increase perceived saturation in skies and foliage. At the same time, the NiSi Optical Nano Coating and full-spectrum neutrality help maintain true-to-life colour fidelity without unwanted colour shifts.

Question: What materials and protection does the filter offer?
Answer: The optical element is made from high-quality glass and housed in a lightweight aluminium frame for durability. Additionally, the filter ships with a carry case for safe transport and storage.

Question: Can I use this filter to create motion blur or shallow depth of field?
Answer: Yes. By reducing light by two stops, the ND4 portion allows you to use slower shutter speeds for motion blur or wider apertures for a shallower depth of field while keeping accurate colours and reduced reflections.