The Sony VF-37CPKB Filter Kit consists of two valuable filters everyone should carry in their gear bag.
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. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.
Glass protection filters are wise initial investments. They help protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs.