Model BF 58-Polar by Formatt / Bogen. 58mm size. Compare this Schott glass in quality to Tiffen, Schneider, and B+W. Retails normally for at least $45 at discount retailers.

Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.

Linear polarizers are used with most video and manual focus photo cameras. They are not recommended for auto-focus SLR cameras.

Formatt, a company with three generations of professional filter-making experience produces every filter to the highest technical standards. The finest materials, together with state of-the-art production technology have resulted in a standard of optical excellence unmatched anywhere else.