NiSi Cine Drop-In Filter ND8/Polarizer

NiSi Cine Drop-In Filter ND8/Polarizer – 3-stop ND and polarizer for NiSi ATHENA lenses

The NiSi Cine Drop-In Filter ND8/Polarizer combines a three-stop neutral density effect with a circular polarizer designed specifically for NiSi ATHENA full-frame prime lenses that feature a drop-in filter slot. It lets you slow shutter speeds and open apertures while reducing reflections and glare from non-metallic surfaces. The filter uses high-quality optical glass and NiSi Optical Nano Coating to preserve full-spectrum neutrality and true-to-life colors.

Key features at a glance

• Designed for use with NiSi Athena full-frame prime lenses featuring a drop-in filter slot
• Darkens the overall image by 3 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

How the ND8 and polarizer work together

The ND8 portion darkens the image by three stops, which directly enables you to use slower shutter speeds or wider apertures. As a result, you can capture motion blur intentionally or achieve shallower depth of field for subject isolation.

Meanwhile, the polarizer removes or reduces reflections and glare caused by light polarized from non-metallic surfaces. This leads to richer skies and more saturated foliage, as well as clearer detail on wet or reflective surfaces.

Optical quality and coatings

NiSi has applied its Optical Nano Coating to the filter to maintain full-spectrum neutrality. This coating helps the filter preserve accurate color rendition and clarity across the visible spectrum so your images remain true to life without noticeable color shifts.

The optical element itself is made from high-quality glass, and the assembly sits within a lightweight yet robust aluminum frame. Together, these materials deliver stable handling in the field while supporting consistent image quality.

Design, fit and transport

The filter fits snugly into the drop-in slot of compatible NiSi ATHENA full-frame prime lenses, acting as an integrated extension of the lens. NiSi supplies a convenient carry case with the filter, making it easy to transport and protect when not in use.

Compatibility

This drop-in filter is compatible with NiSi ATHENA full-frame prime lenses that include a drop-in filter slot. If your lens has that slot, the filter is designed to sit securely and work as intended.

Specifications

What’s in the box

• NiSi Cine Drop-In Filter ND8/Polarizer
• Protective carry case for transport and storage

FAQ

Question: Will this filter fit my NiSi ATHENA lens?

Answer: The filter fits NiSi ATHENA full-frame prime lenses that include a drop-in filter slot. If your ATHENA lens has that slot, the filter is designed to seat securely in the slot and perform as specified.

Question: How does the ND8 affect my exposure choices?

Answer: The ND8 darkens your image by three stops. This allows you to use slower shutter speeds to capture motion blur or to open your aperture wider for a shallower depth of field while maintaining proper exposure.

Question: What practical benefits does the polarizer provide for filmmaking?

Answer: The polarizer reduces glare and reflections from non-metallic surfaces, such as water or glass, and increases saturation in skies and foliage. This helps you achieve clearer, more contrast-rich footage in outdoor and reflective environments.

Question: Will the filter change the color balance of my footage?

Answer: The filter is treated with NiSi Optical Nano Coating and designed for full-spectrum neutrality. That means it aims to preserve original color fidelity and clarity without introducing significant color shifts.