NiSi 40.5mm Natural Night Filter (Light Pollution Filter)

The NiSi 40.5mm Natural Night Filter is specifically designed for night photography and astrophotography, addressing the challenge of light pollution that affects night sky imagery. This filter blocks the most common wavelengths of light pollution from mercury vapour, sodium, and low CRI streetlights, allowing your camera to capture clearer, more authentic night scenes. Constructed from high-quality, precision annealed optical glass with a finely ground and polished surface, the filter features NiSi's unique multi-layer NANO Coating technology with waterproof and oil-resistant properties. The double-sided coating reduces reflection to minimise ghosting and flare, ensuring exceptional image clarity even with modern high-megapixel cameras. Approximately 1 stop of light reduction.

• Specifically designed for night photography and astrophotography
• Blocks wavelengths from common light pollution sources for clearer night skies
• Premium optical glass construction with multi-layer NANO Coating technology
• Waterproof and oil-resistant nano coating reduces ghosting and flare
• 40.5mm thread size for easy attachment to compatible lenses