Editorial Review:

Amazon.com Product Description:
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.

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Rating: - Center Spot
Center Spot filters are the perfect solution to the problem of background composition. Whether Surrounding area should be of the same color as the subject or of a contrasting color is a matter of personal taste. When the light source is behind the photographer, the center spot filter appears dense. With backlighting, particularly if the light strikes the filter directly, a soft. And glowing effect is produced. The size of the central area also depends on the groove into which the filter is inserted. Filters 060-068 are recommended for focal lengths between 50 and 250 mm, 070-078 for focal lengths between 20 and 40mm.