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. If you combine a Variocolor with a Neutral Polarizer, you can vary the intensity by rotating the Neutral Polarizer. For example, depending on the relative rotation of the VarioColor Pink/Orange filter and the Neutral Polarizer, the reflections become either a pink tint or an orange tint. The effect can be seen through the viewfinder and varies according to how the filter is rotated and its orientation to the sun.
This filter measures 66 x 72mm and fits the Cokin A series holder.