A CPL filter reduces the reflection from non-metallic surfaces and helps to reveal the original color and texture of the object. With proliferation of digital cameras and photo editing software, many special effect filters are obsolete except a fewspecialized filters such as circular polarizer CPL) filters and neutral density (ND) filters.A CPL filter is an indispensable tool that photographers and videographers should have. By using CPL filters in photography and videography, certain effects can be obtained that would not be possible by using software in post-processing.