Operation Manual

Working with bitmaps | 533
Effect Description
Hue/saturation/lightness Lets you adjust the color channels in a bitmap and change the
position of colors in the spectrum. This effect allows you to change
colors and their richness, as well as the percentage of white in an
image.
Selective color Lets you change color by changing the percentage of spectrum
CMYK process colors from the red, yellow, green, cyan, blue, and
magenta color spectrums in a bitmap. For example, decreasing the
percentage of magenta in the reds spectrum results in a color shift
toward yellow.
Replace colors Lets you replace one bitmap color with another color. A color mask
is created to define the color to be replaced. Depending on the
range you set, you can replace one color or shift an entire bitmap
from one color range to another. You can set the hue, saturation,
and lightness for the new color.
Desaturate Lets you reduce the saturation of each color in a bitmap to zero,
remove the hue component, and convert each color to its grayscale
equivalent. This creates a grayscale black-and-white photo effect
without changing the color model.
Channel mixer Lets you mix color channels to balance the colors of a bitmap. For
example, if a bitmap has too much red, you can adjust the red
channel in an RGB bitmap to improve image quality.
To adjust color and tone automatically
1 Select a bitmap.
2
Click Bitmaps Auto adjust.
To adjust color and tone by using an adjustment filter
1 Select a bitmap.
2
Click Effects Adjust, and click an adjustment filter.
3 Specify any settings you want.
Using the Tone Curve filter
The Tone curve filter lets you perform color and tonal corrections by adjusting either individual color channels or the composite channel
(all channels combined). Individual pixel values are plotted along a tone curve that appears in a graph and represents the balance between
shadows (bottom of graph), midtones (middle of graph), and highlights (top of graph). The x-axis of the graph represents the tonal values of
the original image; the y-axis of the graph represents the adjusted tonal values.