<P>For Cokin Z-Pro series filter holders.</P>
<P>Cokin Z123F Graduated Blue filter
Graduated Blue filters enhance the blue of the sky.
For mountain landscapes, they provide a more dramatic transition between the sky and the mountains.
Graduated Blue filters are also used in marine photography, where they intensify the white sparkle of breaking waves.
Unlike Cokin's other Z123 series filters, the Z123F has the graduated blue effect on the entire surface of the filter. Other Z123 filters begin to show the graduated blue colour from the middle of the filter.</P>