You want a miracle to erase years editing the disturbances related to sun and water reflections on your photos? ... Well it Hama filter (excellent brand the way) with knob, will fade or even eliminate those unsightly lines made by the sun shining or water. This also works with the reflections that appear on car windows. Who does not know, it's pretty magical and stunning! Main use: as soon as the sun is very strong or reflections are important.