Using Auto Levels; To Adjust Highlights, Midtones, And Shadows Automatically; Using Curves - MACROMEDIA FIREWORKS 8-USING FIREWORKS Use Manual

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.
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
You can also adjust highlights, midtones, and shadows automatically by clicking the
Auto button in the Levels or Curves dialog box.

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
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.
represents the original brightness of the pixels, shown in the Input box.
Chapter 8, "Using Live Filters," on page
Adjusting bitmap color and tone
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