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Optimizing Scanning / Adjusting Image Quality

Adjusting Color

Making the Gray Balance Intensity setting
Making the Saturation setting
Making tone curve settings

Color adjustments should be made after adjusting settings related to brightness and contrast. Color settings should be made in the order shown above.

Making the Gray Balance Intensity setting

This setting allows you to remove a cast (tint) from a specific color.

Click the Color Adjustment button in the Preview window.

In the Color Adjustment dialog box, click the eyedropper button under Gray Balance Intensity.

The pointer changes to an eyedropper, with movement restricted to within the Preview window.

Move the eyedropper to a location that contains the color whose gray balance intensity you want to adjust, and then click.

The color you selected appears in the two boxes below the Gray Balance Intensity slider.

To change the gray balance intensity level of the color you selected, move the slider left or right, or enter a value in the text box.

set to 100

You can enter a value between 0 and 100. Changing the value causes the color in the right hand box to change accordingly. Your changes are also reflected in the image in the Preview window.

Note:

See Color Adjustment for more information on adjusting the gray balance intensity level.

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Making the Saturation setting

Saturation is the density of a color. Higher saturation makes the color appear richer, while lower saturation makes it appear paler.

original image

set to 50

Follow these steps to adjust the Saturation setting.

Click the Color Adjustment button in the Preview window.

Move the Saturation slider left or right, or input a value between -100 (lowest color density) and 100 (highest color density).

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Making tone curve settings

After you have made the other color settings described in this section, you can use the tone curve to fine-tune the intensity of colors in your image.

Note:

The Tone Correction feature is unavailable whenever Black & White is selected as the Pixel Depth setting and None is selected as the Halftone setting.

Click the Tone Correction button in the Preview window, select the Channels button for the color you want to adjust, then use the tone curve editor and Output options as explained below.

Tone curve editor

Moving the mouse pointer into the tone curve editor causes it to change to a finger. Use this pointer to drag any of the five points in the curve and change its shape. The x-axis of the curve is the brightness of the original (input values) while the y-axis is the brightness of the scanned image (output values).

To change the tone curve back to its default, select Linear from the Tone Curve Name list.

To add your settings to the Tone Curve Name list, type a name for the settings in the list, then click Save.

Output values

These are the current values for output data in accordance with the current locations of the points inside the tone curve editor. These values change when you drag points in the tone curve editor, or you can enter in values here to change the shape of the tone curve. Each value can be adjusted within a range of 0 to 255.

Note:

Each output value name has a check box to the left of it. Highlight and Shadow are always selected, but you can select or clear 1/4 Tone, Midtone, and 3/4 Tone by clicking their check boxes.

When a value's check box is clear, its point on the tone curve editor automatically shifts to smooth out the tone curve when one of the other points is moved.

When a value's check box is selected, it means that its point is fixed and it will not shift when other points are moved.

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