Ikelite UR/Pro Green Water External Color Filter 3.9"
The filter alters the green color of cold salt water, or fresh water to give it a rich, natural tone.
The filter works exceptionally well in shallow depths up to 60'.
The filter also enhances the contrast of underwater photographs.
The filter is effective with available sunlight up to 80' (24m).
*Note: Use the filter with available light only.