Hoya NXT 77mm Circular Polarizer CPL Slim Frame Digital Filter A-NXT77CRPL
Over 97% average light transmission
Heat resistant, high-transparency optical glass
Light rays, which are reflected by any surface, become polarized and polarizing filters are used to select which light rays enter your camera lens. They allow you to remove unwanted reflections from non-metallic surfaces such as water, glass etc. They also enable colors to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds. HOYA's polarizing filters do not affect the overall color balance of a shot.
Recommended for TTL & AF cameras and Video camcorders