The effect is produced by a series of thin lines etched into the flat optical surface of a clear filter Exciting and dazzling star effects generated from original point or reflected light sources with the added glitter and sparkle of these exclusive Natural looking asymmetrical designs and shapes Great for water scenes, candle flames, street lights, and more Tiffen offers 4, 6, and 8 point symmetrical star effects as well as additional asymmetrical star patterns through their exclusive Hollywood FX Series (North, Hyper, Vector and Hollywood star effects)