NiSi Square Nano IRGND Soft 150x170mm GND8 0.9

NiSi Square Nano IRGND Soft 150x170mm GND8 0.9 – Infrared-protected soft graduated neutral density for landscape control

This NiSi Square Nano IRGND Soft 150x170mm GND8 0.9 is designed for landscape photographers who need controlled exposure between sky and foreground. The filter features a dark area on the top that transitions gradually to clear at the bottom, which helps prevent overexposure of skies when the transition between light and dark areas is not sharp. A classic use case is shooting in mountainous terrain where light changes gradually.

How the soft graduated design helps

The soft graduation provides a subtle, gradual change from dark to clear. As a result, you can balance bright skies with darker land without creating a hard line across your image. In practice, the filter allows you to position the transition to match the scene since it can be repositioned in the holder. This repositioning helps you recompose the photo for the best result.

Optical quality and coatings

The filter is made from high quality optical glass (not resin), ensuring image clarity and definition. NiSi applied a nano coating to reduce reflections and protect image detail. Additionally, the filter includes an infrared protection coating layer to reduce infrared light that can cause an unwanted red cast when shooting at small apertures. The nano coating is present on both sides and offers water and oil repellence to help keep the surface clean in the field.

Color neutrality and image behavior

Neutral density filters, including this graduated version, do not affect the coloration of the image. This NiSi filter also advertises ultra low color cast and ultra low reflection to preserve accurate colors and high definition rendering across the frame. The product specification lists Environmental Optical Lens glass (H-K9L) as the glass type used.

Available density steps and options

NiSi offers these Nano IR Soft Graduated Neutral Density filters in multiple maximum-effect steps. The available aperture-step options are:

• 2 stop
• 3 stop
• 4 stop
• 5 stop

This particular listing is for the GND8 0.9 variant, which is identified in the product name.

Key features

• Ultra Low Color Cast
• Ultra Low Reflection
• No Vignetting
• High Definition
• Nano Coating on Both Sides, Water & Oil Repellent
• Environmental Optical Lens glass (H-K9L)
• Infrared protection coating layer to reduce infrared-induced red cast
• Repositionable in a holder for compositional flexibility

Specifications

FAQ

Question: What scenes suit the NiSi Square Nano IRGND Soft 150x170mm?

Answer: The filter suits landscape scenes where the brightness transition between sky and land is gradual, such as mountainous areas. Its soft graduation helps blend the exposure smoothly.

Question: Will this filter change the colors in my photos?

Answer: Neutral density filters do not affect image coloration, and this NiSi filter is specified to have ultra low color cast and ultra low reflection to preserve natural colors.

Question: Can I move the transition to match my composition?

Answer: Yes. You can reposition the filter in a holder, which allows you to recompose and align the graduated transition with the scene for better results.

Question: Why is infrared protection important on this filter?

Answer: Infrared protection helps reduce unwanted red color caused by infrared light when shooting at small apertures. The filter’s infrared protection coating layer assists in restoring natural colors by limiting that infrared contamination.

Question: What construction and coatings does the filter use?

Answer: The filter is made of high quality optical glass (not resin) identified as H-K9L, and it features nano coating on both sides for water and oil repellence, along with additional coatings for low reflection and infrared protection.