Cokin CPL Harmonie 37 mm polarizing filter

The Cokin Pure Harmony 37 mm Circular Polarizing Super Slim filter is a polarizing filter with a 37 mm diameter. It can be used, for example, in landscape photography. By rotating the filter, you can remove or bring back reflections from water or even a window. The CP filter also makes the sky slightly bluer, letting you influence the tone of the sky. There will be a slight loss of light when shooting with this filter.