NiSi 77mm Natural Night Filter Light Pollution Filter

By NISI

SKU: 6971634245669

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• Dimensions and Weight

  • Dimensions (cm)

    13.22 x 13.1 x 4.22

  • Weight (kg)

    0.15

  • Unit

    NOS

  • Manufacturer

    Nisi

  • Country of Origin

    China

• Highlights

  1. Reduces Light Pollution in Night Sky
  2. Blocks Yellow Sodium-Vapor Light
  3. Blocks Yellow Mercury-Vapor Light
  4. Blocks Yellow Light from Low CRI LEDs
  5. 1.5-2.8x Filter Factor, 0.6 to 1.5 Stop
  6. H-K9L Optical Glass Construction
  7. Nano Coating
  8. Aluminum-Alloy Filter Ring

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  Description

  

  Specifications

  

  Products In Box

  

• Description

  Light pollution occurs in areas of the night sky that are above or near concentrated and intense sources of artificial light such as cities. These light sources can include exterior and interior lamps for commercial or residential buildings, brightly lit advertisements such as billboards, streetlamps, as well as sports and entertainment venues. Together, they can result in a type of light pollution known as skyglow, where individual stars, the Milky Way, and other astronomical features in the night sky are obscured. Additionally, artificial lights clustered together can become difficult to individually discern. Light pollution from these "cluttered" sources can become a source of distraction within an image and can resemble overexposed areas of glare.When used, the NiSi 77mm Natural Night Filter can improve the results of nighttime images by blocking the yellow light from sodium-vapor lamps, mercury-vapor lamps, or low Color Rendering Index LEDs, common light sources within urban areas...

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• specifications

  • manufacturer

    NISI

  • Country of origin

    ‎Republic of Korea

• Products In The Box

  • Nisi 77mm Natural Night Filter Light Pollution Filter
  • Filter Case
  • Limited 1-year Warranty