Sony 72mm VF-72CPAM Circular Polarizer
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Circular Polarizer - 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).
This filter eliminates ultraviolet rays to remove haze from outdoor shots as well as polarizing the light to remove reflections, and increase color saturation, without affecting the overall color balance.
Filter Type Circular Polarizer Filter Factor 2.3 - 2.8 (1.2 - 1.5 Stop) Shape Circle Circular Size 72 mm Rotating Yes Front Accessory Thread / Bayonet 72 mm Filter Material Glass Coatings None