NiSi Square Nano IR Hard Graduated ND Filter 150x170mm GND8 0.9

NiSi Square Nano IR Hard Graduated Neutral Density Filter

The NiSi Nano IR Hard Graduated Neutral Density (GND) filter is specially designed for landscape photographers. It is made from high-quality optical glass (H-K9L) with a nano coating on both sides to preserve image detail and prevent loss of sharpness. This filter features a hard transition between the dark and clear areas, making it ideal for scenes with a clearly defined boundary between bright and dark regions, such as the horizon line or the boundary between sea and sky.

Key Features

• Constructed from premium optical glass (not resin) for superior clarity and color fidelity.
• Hard-edge graduated neutral density filter darkens bright areas (e.g., skies) while leaving other parts unaffected.
• Does not affect image coloration, allowing use alongside other filters without color cast.
• Repositionable in the filter holder to allow precise composition and optimal results.
• Special infrared (IR) protection coating reduces unwanted infrared light that can cause red color casts when shooting at small apertures.
• Ultra-low color cast and ultra-low reflection for natural color reproduction.
• No vignetting and high resolution performance.
• Nano coating on both sides provides water and oil repellency for easy cleaning and durability.

Usage

This hard GND filter is best used when the scene has a distinct separation between bright and dark areas, such as a clear horizon line. It is also suitable for longer focal lengths where the transition appears softer. The filter helps balance exposure in high-contrast scenes by reducing brightness in the sky or other bright areas without affecting the darker parts.

Specifications

• Dimensions: 150 x 170 mm
• Filter Strength: GND8 (0.9, 3 stops)
• Material: Environmental optical lens glass (H-K9L)
• Coating: NiSi Optical Nano Coating on both sides (water and oil repellent)