NiSi ND8 100x100mm Nano IR 3-Stop ND Filter

The NiSi ND8 100x100mm Nano IR is a square neutral density filter crafted from high-definition optical glass, designed to reduce the light entering your lens by exactly 3 stops (0.9 density). This controlled light reduction enables photographers to use slower shutter speeds for motion blur effects — smoothing flowing water, streaking clouds, or blurring moving subjects — while maintaining proper exposure. The 100x100mm square format is the standard size for professional filter holder systems, and the 2mm thickness ensures compatibility across NiSi and third-party 100mm holders without fitment issues.

What distinguishes the NiSi ND8 from many competing ND filters is its Nano IR coating applied to both surfaces of the glass. This multi-purpose coating serves several functions: it blocks infrared light contamination that commonly causes reddish color casts in ND filters during longer exposures, it reduces surface reflections that can degrade contrast, and it creates a hydrophobic and oleophobic surface that repels water droplets and fingerprints for easier cleaning in the field. The result is a filter that maintains true-to-life color accuracy and edge-to-edge sharpness with no vignetting, making it a reliable tool for landscape, architectural, and fine-art photography where optical precision is essential.