Canon multipass c5500 ユーザーズマニュアル

Chapter 6

You can adjust the contrast and/or brightness of a grayscale image.

1. On the Tone tab, click the Contrast/Brightness button.

2. Move the Contrast and Brightness sliders to the left for less contrast

or brightness, and to the right for more contrast or brightness, until
the desired contrast is achieved.

The image in the preview area reflects your changes.