NiSi Square Nano IRND 100x100mm ND4 2Stops

NiSi Square Nano IRND 100x100mm ND4 (2 Stops) – Infrared Protection for True-to-Life Colours

The NiSi Nano IR Neutral Density (ND4) filter is a 100x100mm square filter that reduces exposure by 2 stops. It lets you extend exposure times for creative effects while preserving accurate, vibrant colours thanks to built-in infrared protection. The filter uses high definition optical glass and advanced nano coatings to maintain image detail and resist contaminants.

Key benefits for photographers

• Extend exposure time to create motion blur or smooth water and clouds without changing colour balance.
• Capture natural, vibrant colours by blocking infrared light that can cause unwanted red casts at small apertures.
• Retain fine detail thanks to high definition optical glass rather than resin.
• Work in challenging conditions with coatings that repel water and oil and reduce reflections.

Design and construction details

The filter is made from high definition optical glass, not resin. NiSi applies nano coating technology on both sides of the glass to minimize reflections and protect image clarity. In addition to the nano coatings, an infrared protection coating helps eliminate the infrared light that can lead to colour shifts when shooting at small apertures.

Performance characteristics

Neutral density filters are designed not to affect the overall coloration of the image. However, cameras become more vulnerable to infrared light when using strong ND filters or shooting at small apertures. This NiSi Nano IRND filter includes an IR protection layer to reduce that vulnerability and restore natural colour rendering.

Available density options (100x100mm)

NiSi offers these 100x100mm Nano IR Neutral Density filters in a range of density steps, including:

• 2 stop, 3 stop, 4 stop, 5 stop, 6 stop, 7 stop, 8 stop, 9 stop, 10 stop, 11 stop, 15 stop and 20 stop

This specific product is the ND4 (2 stops) variant in that lineup.

Features

• Ultra Low Colour Cast, Ultra Low Reflection
• No Vignetting
• High Definition
• Nano Coating on Both Sides, Water & Oil Repellent
• Environmental Optical Lens glass (H-K9L)

Specifications

FAQ

Question: Will this ND4 filter change my image colours?

Answer: No. Neutral density filters are designed not to affect image coloration. This NiSi Nano IRND also includes an infrared protection coating to prevent IR-induced red casts, helping keep colours true to life.

Question: Is this filter suitable for landscape photography?

Answer: Yes. The NiSi Nano IRND filter is specifically designed for landscape photographers, allowing longer exposures for creative effects while maintaining detail and natural colour reproduction.

Question: What material is the filter made of?

Answer: The filter is made from high definition optical glass (H-K9L), not resin, and features nano coatings on both sides for low reflection and easy cleaning.

Question: Which density options are available in the 100x100mm format?

Answer: NiSi offers the 100x100mm Nano IR Neutral Density series in 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15 and 20 stops. This product is the 2-stop (ND4) version.

Question: How does the IR protection help my photos?

Answer: When using ND filters or small apertures, infrared light can produce an unwanted red cast. The IR protection coating reduces that infrared transmission, restoring natural colour balance and improving final image fidelity.