Dfx User Guide - Tiffen.com

Rainbow
Recreates arced rainbows of spectral colors, usually identified as red, orange,
yellow, green, blue, indigo, and violet, that appear in the sky as a result of the
refractive dispersion of sunlight in drops of rain or mist.
1 Apply Rainbow from the Light category.
2 Choose Light > Blend > Add, Screen or Normal blend mode.
Add will burn out highlights while Screen will retain them. Normal uses a normal
composite function to add the rainbow.
3 In the Light menu, adjust the Brightness, and if you’d like, set the Displacement
and Blur of the rainbow.
4 Set the base of the rainbow using Crop > Offset, Angle and Softness.
5 Adjust the position of the rainbow by clicking and dragging the center image
point to the desired location.
6 Set the Rainbow > Radius, Aspect, Thickness and Softness as desired.
7 Combine the rainbow with a selection by changing the Rainbow > Blend Mode
from Rainbow Only to Selection.
Selection only adds the rainbow in the areas of the selection. If you are not
seeing enough of the rainbow, your selection should be adjusted.
8 Change your View selector to Selection to see the selection values.
The default selection settings are preset to a highlight selection. The areas that
are white in the selection are the areas where the rainbow will be added into
the image. The location of the rainbow within the scene can be adjusted by
changing the Selection > Position and Range parameters.
9 Change the View selector from Selection to Output.
10 Change the Selection > Position parameter if you want to change where you see
the rainbow.
11 Increase the Selection > Range value to add more of the rainbow to the scene.
Decrease to see less of the rainbow.
12 Increase the Selection > Blur parameter to soften the selection.
13 Click the Done button to apply the filter to your image.
Filter Tutorials 141
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See the Rainbow filter on page 416 for more information.
Dfx User Guide
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