Purple Fringing

Nodes

This nodal is useful for removing chromatic aberrations at high frequencies. This optical problem is usual to find around overexposure zones, where white seems to be surrounded by a purple border.

This border can also be seen in other colors, and the nodal will serve for any of the colors caused by the aberration, adding more points in the curve Hue vs. Sat.

Freq Div

This node has the parameter Blur> Radius edited, with which the spatial frequency that the chromatic aberration has is divided. The higher the value, the smaller the edge size where the next node will operate.

Fringing

This node has the Hue vs. Sat curve edited and with the magenta color with Sat 0.2 in such a way that by default it desaturates the characteristic color resulting from the chromatic aberration.

In some cases, the border color can also be yellow, and to attenuate it, add a point of yellow in the same curve and decrease saturation.

The blocked nodes keeps only the bypassing. Thanks to that the user can disable the Fringing node and the node tree does not lose its neutral action.

Link to .drx here.

Miércoles, 8 Mayo, 2019