Cokin P171 Varicolor Filter with Protective Case (Red/Blue)

Vertical and horizontal reflections take on different colors depending on the angle the filter is turned Circular filter Includes protective case

Cokin filters were invented by professional photographer Jean Coquin. By using square filters like Cokin's, which fit into a holder and are attached to a lens via an adapter ring, the photographer has a number of immediate advantages. There is no need to duplicate filters to fit different size lenses, up to three filters can be used at once to create unique effects, and the photographer has control over the positioning of the effect on the photograph.