Optolong Clear Sky 82mm Filter Screw on Lens

Clear Sky Filter is a light pollution filter supressing light pollution to improve contrast of the Milk Way. Working in Bortle 2-3 levels with natural color.

19,469.00

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  • Warranty 1 year
  • Free 30-Day returns

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Description

1. Optolong Clear Sky Filter Introduction
A screw on filter with the easiest installation way like UV filter.
Supress light pollution to make the night sky clearly.
Enhance the contrast of images.
To bring up the colors, fascinating experience.
2. Coating Technology

·Multi-layers anti-reflection coating

·Non-cementing optical substrate coating

·Optolong L-Pro filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.

·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.

Warm prompt

●About color: due to the influence of ambient light, color difference of the display and flash photography, the color of the product may have some color difference. Detailed color is in accordana with the final product.

●About coating: the interference filter will show different colors under different light, which is a normal phenomenon. Please refer to the material object.

●About the style: in order to improve the product, the change of design/appearance/parameters has not been updated in time. Please see the subject produce.

●About the description: the series of this product have the same material, technology and design, different sizes only, please note.

 

Optolong Clear Sky features:

★Round 77mm mounted, 82mm mounted to screw on the lens, or the objective lens of telescopes

★SLR Camera clip filters: EOS-C, EOS-FF, NK-FF, Sony-FF

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