These filters are available in two different densities cokin s 150 151 and have a misty graduated area the fog or mist effect is more pronounced with more distant objects while the foreground remains sharp and clear these filters can be combined with cokin graduated and sunset filters vertical adjustment in the filter holder provides a continuous graduation of sharpness between near and far planes this filter measures 85 x 85mm and fits the cokin p series holder adds fog to entir