| # Contrast
Table of Contents How To... | Use Contrast to set the color contrast for the entire image. To increase or decrease the color contrast, specify a value between -100 and 100. The contrast of the color channel you make adjustments for will be increased or decreased, according to the value you specified.
Drag the slider to adjust the contrast. Dragging to the left decreases the contrast level and to the right increases it. The changes you make with the slider are automatically displayed in the related box, and vice versa. You can also use spin buttons to adjust the contrast level, or type a certain value in the Contrast box. To increase the image contrast, click an arrow pointing up. To decrease contrast, click an arrow pointing down. When entering a value in the Contrast box, follow these rules: To decrease the image contrast, in the Contrast box, type a value between -100 and -1. To increase the image contrast, in the Contrast box, type a value between 1 and 100.
View the image in the preview box and make some further adjustments if needed.
##### Related Topics:
Working With ScanThru Options Panel Adjust Image Colors Channel