Formatt-Hitech Firecrest Circular Filters. Ultra, ND, CPL Etc. HD CPL Polariser Normal & Ultra Slim. In 58mm there are 13, 16, 18 and 22 stop in the Ultra Range. Gold 2 and Sapphire 2. ND Std MC (Multicoated) ND 0.3 to ND 3.0.
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