Removes unwanted reflections from surfaces such as water and glass / Increases color saturation / Rotates for adjustment The Tiffen 62CP 62MM Circular Polarizer is a sophisticated accessory that selects which light rays enter your camera lens. Once reflected, light rays become polarized, often with undesirable effects. Polarizers remove unwanted reflections from non-metallic surfaces such as water or glass, and also saturate colors, improving contrast. The effect can be seen through the viewfinder and changed by rotating the filter Filter factor varies between 2.3 and 2.8, according to how the filter is rotated and its orientation to the sun Best results with SLR cameras Designed for lenses specifying a 62mm filter thread size Rotating mount