User Guide

44 Chapter 2: Working with Bitmaps
To adjust a specific point in the tonal range:
1 Select the image.
2 Do one of the following to open the Curves dialog box:
■ In the Property inspector, click the Add Effects button, and then choose Adjust Color >
Curves from the Add Effects pop-up menu.
■ Choose Filters > Adjust Color > Curves.
Note: Applying a filter from the Filters menu is destructive; that is, it cannot be undone except
when Edit > Undo is an option. To maintain the ability to adjust, turn off, or remove this filter, apply it
as a Live Effect, as described in the first bulleted option in this step. For more information, see
“Using Live Effects” on page 119.
Curves dialog box
3 In the Channel pop-up menu, choose whether you want to apply changes to individual color
channels or to all colors.
4 Click a point on the grid’s diagonal line and drag it to a new position to adjust the curve.
■ Each point on the curve has its own Input and Output values. When you drag a point, the
Input and Output values update automatically.
■ The curve displays brightness values of 0 to 255, with 0 representing the shadows.
Curve after dragging a point to adjust