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FREE SHIPPING ON MANY PRODUCTS
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Still not sure what is the right gear for you?
Read our 101 article or get in touch. We will be glad to help.
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
SKU : OL-CLEARSKY-77
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Product Details
A Clear Sky Filter from Optolong Optics Co,.Ltd!
This is a front facing 77 or 82 mm, no dark-corner filter. The CSF blocks the city Na and Hg light pollution to improve contrast effectively. The main point of this filter that differs with other light pollution filters, is its front facing, 77 or 82 mm, you can twist it into the front of your camera's lens directly like a UV lens.
The performance of this filter reveals no wavelength shifting resulting in no color gradients through the images.
This filter is well suited for use with any lens where a UV lens is recommended.
The images above are from the famous astrophotographer Vincent Cheng of Hong Kong, taken on January 9th.2017.
specifications
Bandpass | Broadband |
Filter Thickness | 1mm |
Filter Type | Light Pollution/City Light Suppression |
Free Shipping | Yes |
Shape | Round |
Size | 2" |
included items