COKIN Fog Filters add a touch of dream and mystery to your photos. By the lakeside, they evoke the magical hour when elves and sprites dance in the mist. In a swirling sea mist, the most innocent sailing boat becomes a ghost ship. At the end of the day, in a thick city fog, car headlights recreate the atmosphere of crime thrillers. By night, old isolated houses take on the air of haunted houses. Particularly if a lone, diffused light is shining upstairs, in an effect worthy of a horror film !