How can I create a split-toning effect in GIMP?
Asked 12/13/2016
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I want to give a photo a split-toned look, where shadows and highlights shift toward different colors, similar to a duotone effect. What is a simple way to do this in GIMP?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
3
The effect is not a single color, but a gradient map, where everything between black and white is replaced with a transition between two colors. To create this effect in GIMP, you would first set the active foreground and background colors to the colors that you want to map to black and white, respectively:
The source image should have good contrast for best results:
Make sure that the the active gradient is set to "FG to BG (RGB)", which is the default, then from the "Colors" menu, select "Map>Gradient Map":
Originally by user37649. Source · Licensed CC BY-SA 4.0
user37649
9y ago
0
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A simple way in GIMP is to use a gradient map. Split toning here is basically mapping black and white values to two different colors, with a smooth transition between them.
Steps:
- Start with an image that has good contrast.
- Set your foreground color to the color you want in the shadows.
- Set your background color to the color you want in the highlights.
- Make sure the active gradient is FG to BG (RGB).
- Go to Colors > Map > Gradient Map.
GIMP will remap the tones of the image so dark areas move toward the foreground color and bright areas toward the background color.
Another method is:
- Convert the image to black and white.
- Duplicate the layer.
- Add a grayscale layer mask to the top layer.
- Colorize the top layer for highlight tones and the lower layer for shadow tones.
The gradient map approach is usually the quickest and most direct. If the result looks weak, increase the image contrast first.
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