Let's get more specific here ... it reduces the bluish tint in bright light and the blue in shadows for color film.
Jostein wrote: > Hi, Jasmine > > First, a warm welcome from me too. > > If you place your skylight filter over a white sheet of paper, You'll see a > faint pinkish colour. The filter is meant to take away excess blue colour when > shooting outdoors in bright light. The colour is so faint, though, that you can > safely leave it on at all times.