Making Adjustments to Achieve Safe Color Values
If some of your color levels exceed limits, you can return them to safe color values by adjusting the color correction controls in any combination. The following procedures show how to make various adjustments using the Controls subdividing tab of the HSL group and the Curves group.
To bring luminance within safe limits:
| 1. | |
Click the Controls subdividing tab in the HSL group.
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| 2. | |
Click the Enable button for the HSL group and the Controls
subdividing tab.
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| 3. | |
Click the Enable button for Clip Low and Clip High controls to
activate them.
|
| 4. | |
Type 16 in the Clip Low text box, and press Enter (Windows) or
Return (Macintosh).
|
| 5. | |
Type 235 in the Clip High text box, and press Enter (Windows) or
Return (Macintosh).
|
Luminance values are clipped to safe levels.
To bring RGB values within safe limits:
| 1. | |
In the Master ChromaCurve graph of the Curves tab, click the lower
left control point to select it.
|
A circle appears around the point.
| 2. | |
Under the Master ChromaCurve graph, type 16 in both the input text
box and the output text box.
|
The control point moves to 16, 16. The system adjusts RGB values
under 16 up to 16.
| 3. | |
In the Master ChromaCurve graph of the Curves tab, click the upper
right control point to select it.
|
A circle appears around the point.
| 4. | |
Under the Master ChromaCurve graph, type 235 in both the input text
box and the output text box.
|
The control point moves to 235, 235. The system adjusts RGB values
above 235 down to 235.
To bring composite levels within safe limits:
| 1. | |
First adjust luminance and RGB levels using the previous procedures.
|
If composite levels do not fall within safe limits, continue with step 2.
| 3. | |
If the composite high warning is on, do the following:
|
| |
In the Master ChromaCurve graph, Shift+click the upper right
control point, and drag it down the curve until the composite high
warning turns off.
|
| 4. | |
If the composite low warning is on, do the following:
|
|
| |
In the Master ChromaCurve graph, Shift+click the lower left
control point, and drag it up the curve until the composite low
warning turns off.
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