NiSi 77mm Natural Night Filter Light Pollution Filter
The 77mm Natural Night Filter from NiSiis designed to reduce the appearance of light pollution in im...
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By: NISI
SKU: 6971634245669
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Highlights
- Reduces Light Pollution in Night Sky
- Blocks Yellow Sodium-Vapor Light
- Blocks Yellow Mercury-Vapor Light
- Blocks Yellow Light from Low CRI LEDs
- 1.5-2.8x Filter Factor, 0.6 to 1.5 Stop
- H-K9L Optical Glass Construction
- Nano Coating
- Aluminum-Alloy Filter Ring
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