Auto Magic External 77mm Blue Water Filter

77mm thread size filter designed for cameras without manual white balance.  Also works with cameras with manual white balance.External mounting filters are made in optical quality acryllic (3mm thick) and are suitable for external mounting underwater. Please treat filters with care to maintain their optical performance. The external filters are supplied with a anti-static, lint free cloth for cleaning. External filters are packed only as singles and there is no discount for multiple orders.