Dear Calumet I ordered and paid for a neutral density filter, now well over a month ago, and though I understand that glass is difficult since the Japanese earthquake what is most troubling is finding out information about expected date of delivery. I have rung Calumets head office once and was promised a reply. None arrived! I have asked in the Bristol office and have rung Head office but no reasonable reply. They would not allow me to ring the firm direct. Irealise some firms are more difficult than others to negotiate with but is is not really acceptable. I have used Calumet for years and have found their service very acceptable except for this one item. Tony Gill