Using the Curves effect

The following procedures provide a basic overview of how to use this effect.

To use the Curves effect:

1. Choose Effect > Adjust > Curves.
2. If the image has more than one color channel, choose the channel you want to adjust from the Channel menu. RGB alters all channels using a single curve.
3. Select Bezier .
4. Click the part of the curve you want to adjust.
5. Click any points on the curve that you want to remain fixed. For example, if you want to adjust the midtones while minimizing the effect on the highlights and shadows, click the quarter and three-quarter points on the curve. You can add up to 14 points to the curve, locking those values.
6. To remove a fixed point, drag it off the graph.
7. Adjust the curve by dragging it.

To use Arbitrary Map in the Curves effect:

1. Click the Folder icon to locate and open an existing map, or click the pencil tool to edit the default curve.
2. Draw or edit the curve in the Curves graph.
3. If desired, click Smooth  to smooth the curve or click Line  to reset the curve.