The use: A polarising filter (or polarization filter) is used to remove reflections from a shiny surface and make blue skies darker. Types: Linear and circular polarizer. Circular is recommended. Manufacturers: Hoya, B&W and Cokin, using different depths of filter mount. Recommendations: not to use with wide-angle lenses and UV Filters. A polarization filter only allows… Continue reading Photography Basics: Polarization Filters