Often it is necessary or desirable to balance the light intensity in one part of a scene with another. This is especially true in situations where you don't have total light control, as in bright contrasty landscapes. Sometimes it is also desireable to add color to part of the photograph. For example, to add blue to only the sky. Lee Color Graduated filters are half-color, half-clear, with a graduated transition for blending into the scene. They are available in an array of colors.
Lee color graduated filters are available with soft or hard transitions from dark to clear. The soft edge is recommended for wide angle lenses and the hard edge is recommended for normal and longer lenses.
Lee graduated resin filters are 100 × 150 mm and 2 mm thick. The 150 mm length allows for adjustment of the filter within the holder.
Coral is pinkish warm-up filter, redder than the 81 series.