NiSi Hard Nano IR GND8 0.9 — 100x150mm Graduated ND Filter
The NiSi Hard Nano IR GND8 (0.9) is a 100x150mm rectangular hard-edge graduated neutral density filter with a 3-stop light reduction on the graduated side and an infrared-cut coating to prevent the colour shifts that uncoated ND glass can cause with digital sensors.
What makes this filter stand out?
Hard-edge GND filters are built for scenes with a clean, defined horizon — think flat seascapes, open plains, or architecture against a bright sky. The hard transition line snaps the exposure difference into check right at that horizon, whereas a soft-edge version would bleed too much light into the foreground. The Nano coating on NiSi filters adds water and oil repellency, making it easier to keep clean in the field.
The IR coating matters more than many photographers realise. Without it, infrared light can pass through standard ND glass and cause reddish or muddy casts in skies, especially when shooting at longer exposures. The IR-blocking layer in this filter keeps colours accurate without needing heavy correction in post.
At 100x150mm, this filter fits the widely used NiSi 100mm system holders, which are compatible with a broad range of lenses via step-up adapter rings. One practical note for wide-angle shooters: always check your specific holder and adapter combination for vignetting, as filter thickness and frame size can interact differently depending on your lens's field of view.
Who is this for?
Landscape and travel photographers who work with a defined horizon and need reliable, neutral colour rendition will get the most from this filter. If you shoot mixed terrain where the horizon line is irregular, a soft-edge GND or a reverse GND would be a better match. Buying a used NiSi Hard Nano IR GND8 is a practical way to add a high-quality optical filter to your kit without paying new-glass prices — every second-hand filter on Camera-tweedehands.nl comes with a minimum 12 months warranty and has been individually photographed so you know exactly what you are getting.
