The Split Toning tab sheet contains five sliders for creating a split tone effect
consisting of one or two colors.
The Preset combo box at
the top offers many creative presets to choose from. The Default option resets
all sliders to zero and deactivates the effect that is produced by these
controls.
There are two pairs of Hue and Saturation sliders that let you select a color. The slider pair under the Highlights label adds the color to the brighter areas whereas the one under Shadows adds the selected color to the darker image areas. The Hue slider lets you select the basic color whereas the Saturation slider increases or decreases the intensity of the color.
The Balance slider shifts the border between the shadows and highlights. Negative values apply the color selected under "Shadows" to more image areas whereas positive values propagates the highlight color to a larger part of the image. This allows you to make one of the two colors more prominent. To keep both in balance keep a slider value of zero.
If you do not want to apply a Split Toning effect, make sure that both Saturation sliders are set to zero. To apply only one color (instead of two colors) to the image, set one of the Saturation slider to zero. By setting the Balance slider to 0 respectively 100 you can then colorize both dark and bright image areas.
If you activated the Convert to Grayscale check box on the previous tab sheet, you can use the Split Toning controls to colorize the black and white effect, e.g. to apply a sepia effect.