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The Hoya Circular Polarizing HD (High
Definition) Digital Glass Filter represents the next generation of dynamic
Hoya filters.
This filter, with its hardened glass, has 4x the
tensile strength of traditional filters of similar fabrication. This filter is
also of great use in today's digital market where sensors are more sensitive to
reflected light. Hoya incorporates special coatings that reduce these internal
reflections and, thereby, promote a clearer, brighter and sharper image.
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.
Note!
Circular polarizers are specifically designed for use with
auto-focus SLR cameras (They will also work on manual systems and video cameras
without problems).
