Tiffen North Star filters create several luminous points, or "stars", which extend outwards from a central light source.nnThis filter is particularly useful for wedding photographers. It helps to create a romantic ambience and a special effect that clients are looking for. North Stars are best used with a point light source such as a candle, match, torch or street lamp.nnnFeatures:nn- The effect is produced by a series of fine lines etched onto the flat optical surface of a clear filtern- Exciting and dazzling star effects generated from original or reflected point light sources, with the additional sparkle and brilliance of these exclusive, natural asymmetric designs and shapesn- Ideal for aquatic scenes, candle flames, street lamps, and moren- Tiffen offers symmetrical 4, 6 and 8-point star effects as well as additional asymmetric star patterns through their exclusive Hollywood FX series (North, Hyper, Vector and Hollywood star effects)nnnSpecifications:nn- Type: North Starn- Size: 4 x 4" (100 x 100 x 4 mm thickness)n- Density: Not applicablen- Effect: Gives scene lighting a more sparkling and glamorous appearancen- Application: Portraits, weddings - To be used with a point light source such as a candlen- Construction: ColorCore glass