NiSi Cinema 4×5.65″ Yellow Light Blocker (Natural Night)

The NiSi Cinema 4×5.65″ Yellow Light Blocker (Natural Night) is a precision optical filter designed to reduce light pollution in video and images featuring night skies and artificial illumination. Constructed from premium optical glass with NiSi’s exclusive nano-coating technology, this 4mm-thick cinema filter effectively blocks the yellow wavelengths from sodium-vapour lamps, mercury-vapour lamps, and low CRI LEDs–common sources of urban light pollution. The result is improved contrast, reduced glare, and clearer definition of artificial light sources whilst enhancing the visibility of astronomical objects. Compatible with all standard 4×5.65″ cinema matte boxes and filter holders, this professional-grade filter comes with a faux leather protective case for transport and storage.

• Reduces light pollution for cleaner night sky and astrophotography imagery
• 4mm thickness with NiSi nano-coating for durability and easy cleaning
• Blocks wavelengths from sodium-vapour, mercury-vapour, and low CRI LED light sources
• Compatible with all leading 4×5.65″ cinema matte box standards
• Includes faux leather protective case for storage and transport