Ikelite 6441.83 Colour Correcting Filter 4.2-inch Ports
This Ikelite External Colour Filter has a diameter of 106mm (4.2-inch). This filter alters the green colour of cold or fresh water to give your subject a rich, natural tone. The filter also enhances the contrast of underwater photographs.
The filter is effective with available sunlight up to 24m (80 feet). Use the filter with available light only.