Operation Manual

4 Position the eyedropper over the lightest pixels in the image, then click.
The sampled pixels are used to set the white point in the image.
Using the Curves Controls for Color Correction
One of the most powerful ways to remove a color cast from an image or accentuate a
desirable color cast is to adjust the tonal curves of the red, green, and blue color channels
independently. It’s important to understand that you’re adjusting the colors of the image
within the RGB spectrum; therefore, you reduce yellow when you increase blue, you
reduce magenta when you increase green, and so on.
To adjust the tonal curve of a single color channel in an image
1 In the Curves area of the Adjustments inspector or the Adjustments pane of the Inspector
HUD, choose a single color channel from the Channel pop-up menu.
Choose a color channel from
the Channel pop-up menu.
2 Place points on the curve, and adjust them as necessary, to remove or accentuate a color
cast in the image.
551Chapter 17 Making Image Adjustments