NiSi Square Nano IRGND Reverse 100x150mm GND 0.6

NiSi Square Nano IRGND Reverse 100x150mm – Reverse GND 0.6 (2-stop) for sunrises and sunsets

The NiSi Reverse Nano IR Graduated Neutral Density (GND) filter in 100x150 mm size is a purpose-built tool for landscape photographers who shoot sunrises and sunsets. It uses a reverse graduated design: the darkest area sits near the center and then fades toward the top, which helps control the bright horizon line during those moments when light is strongest at the horizon.

Designed for sunrise and sunset scenes

Reverse GND filters were developed to address the specific exposure challenges of sunrises and sunsets, where the brightest light often concentrates on the horizon. This NiSi reverse filter places the maximum density at the center of the filter and transitions to clear toward the upper edge. As a result, you can reduce overexposure on the skyline while keeping foreground detail properly exposed.

High-quality optical construction and coatings

This filter is made from high-quality optical glass (not resin). NiSi uses environmental optical lens glass (H-K9L) and applies a nano coating on both sides. The nano coating repels water and oil and maintains image clarity by reducing reflections.

Additionally, NiSi added an infrared protection coating layer. Neutral density filters can make the camera more vulnerable to infrared light, which may produce an unwanted red cast when shooting at small apertures. The IR protection layer helps reduce that infrared impact and helps restore more natural colors in your images.

Practical features for composition

The Reverse Nano IR GND can be repositioned in a filter holder. That allows you to recompose the scene and place the transition line exactly where you need it for the best result. Because the bottom of the filter is clear, the foreground remains unaffected while the central horizon area is darkened.

Available densities

The NiSi Reverse Nano IR GND in 100x150 mm is available in multiple density steps to match your exposure needs. Choose between:

• 2 stop (0.6)
• 3 stop (0.9)
• 4 stop (1.2)

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)

Specifications

FAQ

question: Can I use this filter for sunrise and sunset shots?

Answer: Yes. The reverse gradient places the darkest area near the center to handle the intense horizon light typical of sunrises and sunsets, helping to prevent overexposure along the skyline.

question: Will this filter change my image colors?

Answer: Neutral density filters do not affect image coloration by design. Moreover, NiSi added an infrared protection coating to reduce IR-induced red casts that can appear at small apertures, helping maintain more natural colors.

question: Is the filter durable and easy to clean?

Answer: The filter is made from optical glass (H-K9L) and has a nano coating on both sides that repels water and oil. This coating reduces reflections and makes cleaning and maintenance easier compared with untreated surfaces.

question: Can I adjust the position of the transition line?

Answer: Yes. The filter can be repositioned in a compatible holder, which lets you align the transition line exactly where you need it in the frame to recompose for the best result.