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Adjusting bitmap color and tone
97
5.
Drag the Output Levels sliders to adjust the contrast values in the image:
■
The right slider adjusts the highlights using values from 255 to 0.
■
The left slider adjusts the shadows using values from 0 to 255.
As you move the sliders, the values are automatically entered in the Output Levels boxes.
Using Auto Levels
You can use Auto Levels to have Fireworks make tonal range adjustments for you.
To adjust highlights, midtones, and shadows automatically:
1.
Select the image.
2.
Do one of the following to select Auto Levels:
■
In the Property inspector, click the Add Live Filters button, and then select Adjust
Color > Auto Levels from the Filters pop-up menu.
■
Select Filters > Adjust Color > Auto Levels.
Using Curves
The Curves feature is similar to the Levels feature but it provides more precise control over the
tonal range. Whereas Levels uses highlights, shadows, and midtones to correct the tonal range,
Curves lets you adjust any color along the tonal range, instead of only three variables, without
affecting other colors. For example, you can use Curves to correct for a color cast caused by
lighting conditions.
The grid in the Curves dialog box illustrates two brightness values:
The horizontal axis
represents the original brightness of the pixels, shown in the Input box.
The vertical axis
represents the new brightness values, shown in the Output box.
When you first open the Curves dialog box, the diagonal line indicates that no changes have
been made, so the input and output values are the same for all pixels.
NO
TE
Applying a filter from the Filters menu is destructive; that is, it cannot be undone
except when Edit > Undo is an option. To maintain the ability to adjust, turn off, or
remove this filter, apply it as a Live Filter, as described in the first bulleted option in
this step. For more information, see
Chapter 8, “Using Live Filters,” on page 193
.
TIP
You can also adjust highlights, midtones, and shadows automatically by clicking the
Auto button in the Levels or Curves dialog box.
Содержание FIREWORKS 8-USING FIREWORKS
Страница 1: ...Using Fireworks...
Страница 78: ...78 Chapter 3 Selecting and Transforming Objects...
Страница 142: ...142 Chapter 5 Working with Vector Objects...
Страница 166: ...166 Chapter 6 Using Text...
Страница 192: ...192 Chapter 7 Applying Color Strokes and Fills...
Страница 234: ...234 Chapter 9 Layers Masking and Blending...
Страница 250: ...250 Chapter 10 Using Styles Symbols and URLs...
Страница 324: ...324 Chapter 13 Creating Animation...
Страница 372: ...372 Chapter 14 Optimizing and Exporting...
Страница 444: ...444 Chapter 16 Automating Repetitive Tasks...
Страница 454: ...454 Chapter 17 Preferences and Keyboard Shortcuts...
Страница 472: ...472 Index...