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Warm Circular Polarizer Glass Filter - 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.
NOTE: Circular polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems without problems). Linear polarizers are used with most video and manual focus photo cameras. They are not recommended for auto-focus SLR cameras
This unique filter is the result of a collaboration between Hoya and respected wildlife photographer, B. Moose Peterson
It combines the advantages of a polarizer with the warming effect of an 81A filter
The filter factor varies according to how the filter is rotated and its orientation to the sun
how do I remove it? I thought I screwed it on, but now I cant remove it by unscrewing!
Asked by: Anonymous
It sounds like you may have screwed it in too tightly and the outer ring is probably spinning when you try to unscrew it. Please remember that it will be righty tighty lefty loosey. Try using something like a rubber band to grip the inner ring on the lens side and gently but firmly twist it in a counter clockwise direction as you are facing the filter on the lens.