\n\nThis is a new Cokin Adaptor Ring In 67mm To Fit Z series Filter Holders.\n\n \n\n \n\nCokin Filters - the original square filter system.\n\nOnly few years ago, photographers and videographers were asking for special effect filters. Today, they ask for COKIN filters. \n\nA French professional photographer, Jean Coquin, invented the concept of creative filter photography. To allow everybody to get a chance to produce great \""creative images\"" Jean Coquin designed a system with the following prerequisites: simplicity, rapidity of use and versatility to leave plenty of room for individual inspiration and creativity. \n\n \n\n \n\nWhat are Cokin filters made from? \n\nCR-39 Organic Glass Resin: All Cokin filters are manufactured from CR-39 organic glass resin - originally launched for the vision lens industry, CR-39 organic glass resin boasts several major features: \n\n--\nExtra lightweight \n\n--\nHighly resistant to shocks, me!