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NiSi Nano IR ND 2.1 6.6x6.6 Neutral Density Filter — main product image
NiSi

NiSi Nano IR ND 2.1 6.6x6.6 Neutral Density Filter

★★★★★5.0 (1 reviews)

Achieve Superior Image Quality with NiSi Nano IR ND Filters The NiSi Nano IR ND 2.1 6.6x6.6 filter is designed for digital cinema, utilizing exclusive Nano dual-side coating technology for pristine image quality. Unlike laminated filters that cause color shift and higher reflection, NiSi filters...

$350.00*
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*Price sourced from Amazon.com. Last updated:Jul 15, 2026.Price and availability are subject to change.

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Overview

Achieve Superior Image Quality with NiSi Nano IR ND Filters

The NiSi Nano IR ND 2.1 6.6x6.6 filter is designed for digital cinema, utilizing exclusive Nano dual-side coating technology for pristine image quality. Unlike laminated filters that cause color shift and higher reflection, NiSi filters are made using 4mm thick H-K9L annealed optical glass. Precision cut, polished, and optically processed to ensure extreme flatness and high parallelism, these filters provide the highest-quality glass and image fidelity. The optical Nano coating tightly controls color, density, and reflection, alleviating solar glare and delivering exceptional results.

Specifications

  • Filter Type: Nano Infrared Neutral Density 2.1 Filter
  • Size: 6.6 x 6.6 inches
  • Coating: Nano dual-side coating technology
  • Glass: 4mm thick H-K9L annealed optical glass
  • Features: Precision cut, polished, and optically processed for flatness and parallelism

Key Features

7 Stop Infrared Neutral Density Filter

4 mm thick optical glass with precision cut, grinding, and polishing

Ultra low color shifting with anti-reflective coating

Water proof, scratch, and oil resistant

Optimized for shooting raw 6K digital images

Specifications

Filter Type
Neutral Density (ND)
Density Value
2.1
Light Reduction Stops
7 Stop
Filter Size
6.6 x 6.6 inches
Glass Thickness
4 mm
Coating
Anti-reflective, Water proof, Scratch resistant, Oil resistant
Optimization
Raw 6K digital images

Pros & Cons

👍 Pros

  • The filter is engineered with a 7-stop infrared neutral density capability, providing significant light reduction.
  • It is constructed from 4 mm thick optical glass, which indicates a robust and high-quality material.
  • Precision cut, grinding, and polishing ensure high optical quality and consistent performance from the filter.
  • An anti-reflective coating helps maintain image clarity by minimizing unwanted reflections and ghosting.
  • The filter features water-proof, scratch, and oil-resistant properties, enhancing its durability and ease of cleaning.

👎 Cons

  • The filter's "7 Stop" reduction might be too strong for some lighting conditions, limiting its versatility.
  • At 4mm thick, this filter may not be compatible with all filter holder systems or very slim camera setups.
  • Its square 6.6x6.6 size means it requires a specific filter holder system, rather than screw-on lens threads.
  • While optimized for 6K digital images, its benefits might not be as pronounced for lower resolution video or still photography.
  • The lack of variable ND functionality means it only offers a fixed 7-stop light reduction, not adjustable.

Frequently Asked Questions

This NiSi Nano IR ND 2.1 filter provides a 7-stop reduction in light, allowing for longer exposures or wider apertures in bright conditions.
The filter is made from 4 mm thick optical glass, ensuring high clarity and durability for photographic use.
Yes, it features an ultra low color shifting design with an anti-reflective coating to minimize reflections and maintain image quality.
Yes, the NiSi Nano IR ND filter is designed to be water-proof, scratch-resistant, and oil-resistant, enhancing its longevity and ease of maintenance.
This filter is optimized for shooting raw 6K digital images, catering to high-resolution photography and videography workflows.

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