Microtek ScanWizard EZ Reference Manual page 100

C. Radius
This field shows the amount of shift towards a particular color and works in
tandem with the Angle field. The Radius range extends from 0 located at the
center of the Color Wheel and indicating the least concentration of color , to 1,
located at the periphery of the Wheel and indicating the greatest concentration
of color.
Example: If your angle is 0° (red on the Color Wheel) and the radius is 1, this results in
an intense reddish cast on the entire image.
The Angle-Radius feature works differently from that of the Saturation bar,
which increases the saturation of all hues in the image without tending towards
any particular color cast.
D. Picker
The Picker lets you pick a known neutral gray shade in your image and adjusts it
to a closer, truer gray. The grays in an image may have a particular color cast
which can be verified through the color information in the Info window . A gray
that tends towards a reddish tint, for instance, will have its R value skewed
higher than the G and B values. By using the Picker on a gray area, the gray is
adjusted so that the RGB values become approximately equal.
E. Saturation bar
This lets you change the intensity of the hues (colors) in your image. Use
Saturation selectively, because increasing saturation will increase the intensity of
all hues in the image.
Using the Color Wheel:
1. To change the hue of an image, move the pointer in the color wheel to its
new color position in the wheel.
2. To change the saturation of an image, drag on the saturation slide bar .
Dragging the slide bar to the left decreases saturation; dragging it to the
right increases saturation.
3. Use the Angle, Radius, and Picker as necessar y.
4. Click an action button. For more details, see the section The Action buttons.
60 Microtek ScanWizard EZ - Professional Mode Reference Manual