{"id":28924,"date":"2025-09-20T19:15:41","date_gmt":"2025-09-20T17:15:41","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=28924"},"modified":"2026-08-25T15:10:44","modified_gmt":"2026-08-25T13:10:44","slug":"optolong-filters-clear-sky-filter-77mm","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/optolong-filters-clear-sky-filter-77mm\/","title":{"rendered":"Optolong Clear Sky Filter 77mm"},"content":{"rendered":"

Optolong Clear Sky Filter 77mm: filter light pollution, also with wide-angle<\/strong><\/h2>\n\n\n\n

Classic interference filters like CLS or UHC only work well when light strikes them perpendicularly. With wide-angle lenses, this causes problems: the transmission shifts towards the edges of the image, and color blotches appear. The Clear Sky filter is constructed differently, which is why it works with wide-angle and even ultra-wide-angle lenses.<\/p>\n\n\n\n

The filter dims the light from streetlights, making the night sky darker and bringing out the structure of the Milky Way better. You screw it directly into the 77mm filter thread of your lens.<\/p>\n\n\n\n

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For the most beautiful night landscapes<\/h4>\n\n\n\n

Think of wide-field shots of the Milky Way, meteor showers, or the aurora borealis: situations where you're working with a fast wide-angle lens and an interference filter isn't an option.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Also usable during the day<\/h4>\n\n\n\n

In nature and landscape photography, this filter reduces the orange cast of artificial light and enriches red and brown tones, making it a versatile filter for any camera bag.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Featured accessories<\/h3>\n\n\n\n

A sturdy tripod and an intervalometer complete your night photography gear.<\/p>\n\n\n\n

For whom yes and for whom no<\/h3>\n\n\n\n