NiSi 100x100mm Natural Night Filter (Light Pollution Filter)

Description

Overview

The NiSi 100x100mm Natural Night Filter is a specialist light pollution filter designed for night photographers and astrophotographers who want to record the night sky with greater accuracy and clarity. Built to fit the NiSi 100mm square filter system, this 100x100mm square filter is a practical and high-performance solution for shooters working in or near urban environments where artificial lighting degrades image quality.

Whether you are shooting Milky Way landscapes from a suburban hillside, capturing star trails over a city skyline, or photographing deep-sky scenes from a moderately light-polluted location, the Natural Night Filter is designed to help you get cleaner, truer results straight from your camera.

Experience & Benefits

Light pollution is one of the most persistent challenges in night photography, and its effects are difficult to fully correct in post-processing. The NiSi Natural Night Filter addresses this at the source by selectively blocking the wavelengths most commonly associated with artificial light sources, including mercury vapor lamps, sodium vapor streetlights, and low-CRI LEDs. The result is a night sky that appears more natural, with stars retaining their true color and the background sky recording with deeper, more accurate tonality.

Because the filter works selectively rather than broadly, it does not significantly reduce the overall light entering your lens. This means you can continue shooting at wide apertures and reasonable exposure times without the heavy exposure penalty associated with standard ND or broad-spectrum filters. For astrophotographers managing both sky glow and subject brightness, this balance between filtration and light transmission is a meaningful advantage.

The filter is constructed from precision annealed optical glass, ground and polished to maintain sharpness and edge-to-edge clarity across even the highest-resolution camera sensors available today. Night photography often demands the sharpest lenses and the cleanest optics in the chain, and the Natural Night Filter is engineered to avoid introducing any softness, distortion, or color shift that would compromise fine star detail or delicate tonal gradients in the sky.

NiSi’s multi-layer NANO coating plays an important role in controlling reflections, ghosting, and flare, which are particularly problematic when bright artificial light sources appear within or near the frame during night shooting. The coating also includes a protective outer layer that repels water, dust, and surface oils, making the filter easier to clean and maintain in the field where conditions can change quickly.

The natural rendering the filter produces makes it especially well-suited to photographers who want their astro and night images to reflect the sky as the eye perceives it under less polluted conditions. Stars remain distinct, the Milky Way retains its structure and color, and foreground elements are not distorted by the orange or yellow cast typically introduced by sodium streetlight glow.

Practical Details

The NiSi 100x100mm Natural Night Filter is designed specifically for use with the NiSi 100mm square filter system, one of the most widely used modular filter systems among landscape and night photographers. The 100x100mm square format fits directly into compatible NiSi 100mm holders alongside graduated ND filters, solid ND filters, and other square filter types, giving you the flexibility to combine filtration as your shooting conditions require.

For night photographers already invested in the NiSi 100mm system, this filter slots naturally into an existing workflow without requiring any additional adapters or accessories beyond those already in use. It can be used alone for light pollution control or combined with other filters in the holder when your composition or exposure demands it. The 100mm system itself is compatible with a wide range of ultra-wide and wide-angle lenses via NiSi’s adapter ring ecosystem, making the Natural Night Filter accessible across many popular camera and lens combinations.

The 100x100mm format is the standard square size for this system and is appropriate for most wide-angle focal lengths commonly used in night and landscape photography.

Summary

• Reduces the visual impact of light pollution for cleaner, more natural-looking night sky images
• Preserves star color and Milky Way structure by selectively blocking sodium, mercury vapor, and low-CRI LED wavelengths
• Minimal exposure penalty compared to broad-spectrum filters, allowing wide aperture and reasonable shutter speeds
• Precision annealed optical glass construction maintains sharpness and clarity across high-resolution sensors
• Multi-layer NANO coating reduces ghosting, flare, and surface reflections during night shooting
• Protective outer coating repels water, dust, and oil for easier field cleaning and maintenance
• Square format: 100x100mm, designed for the NiSi 100mm square filter system
• Compatible with NiSi 100mm filter holders and the full range of NiSi adapter rings
• SKU: 59402
• Best for: Astrophotographers and night sky photographers shooting in light-polluted or semi-polluted environments
• Best for: Landscape photographers capturing nightscapes, star trails, and Milky Way compositions
• Best for: NiSi 100mm system users looking to expand into astro and night filter categories

What’s Included

• NiSi 100x100mm Natural Night Filter (Light Pollution Filter)
• Soft protective case

The NiSi Natural Night Filter is a focused, well-engineered solution for photographers who want better results under light-polluted skies without building a complex or expensive setup. It fits directly into the NiSi 100mm square filter system, making it easy to add to an existing kit and use alongside other filters in your collection. If you are building a dedicated night photography setup or expanding your landscape filter system to cover astro shooting, the Natural Night Filter is a practical and optically sound choice backed by NiSi USA’s local warranty and support. Shipped from the USA.