Adobe Premiere Pro CC v.7.xx - Manual (Page 490)

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Luma Curve
RGB Curves
Note:
shadows, midtones, and highlights.
7. Use the Saturation control to adjust the color saturation in the image. Moving the slider to the left (lower value) desaturates the colors.
Moving the slider to the right (higher values) increases the color saturation.
Adjust color and luminance using curves
The curves adjustment of the Luma Curve and the RGB Curves effects, like the Levels sliders in the Fast Color Corrector and the Three-way
Color Corrector effects, let you adjust the entire tonal range or just a selected range of colors in a video clip. But unlike Levels, which has only
three adjustments (black level, gray level, and white level), the Luma Curve and RGB Curves let you adjust up to 16 different points throughout an
image’s tonal range (from shadows to highlights).
Opening a scope in a Reference Monitor that’s ganged to the Program Monitor lets you view the luminance, chrominance, or both values as
you make the curves adjustments. If you’re using the Vectorscope, there should be minimal green shading in the areas outside of the center of
the scope. Areas outside the center define the level of color saturation.
1. In the Effects panel, click the triangle to expand the Video Effects bin, and then click the triangle to expand the Color Correction bin.
2. Drag one of the following effects to the clip in a Timeline panel:
Adjusts primarily luminance. Keep in mind that adjusting the luminance does affect the perceived saturation of the colors.
Adjusts both color and luminance.
If a clip is selected in a Timeline panel, you can drag the effect to the Video Effects section of the Effect Controls panel.
3. In the Effect Controls panel, click the triangle to expand the Luma Curve or RGB Curves controls.
4. (Optional) Do any of the following to set preview options:
To view only the luminance values in a clip, choose Luma from the Output menu. This option affects only the preview in the Program
Monitor; it doesn’t remove the color from the video.
To display a before and after view of the clip in one monitor, select the Show Split View option. You can specify whether the split view is
horizontal or vertical by choosing from the Layout menu. You can also adjust the relative proportion of the before and after views.
5. (Optional) Click the triangle to expand the Secondary Color Correction controls if you want to correct the exposure for a specific color or
range of colors. Use the Eyedropper tool or the other Secondary Color Correction controls to specify the colors to correct.
6. Do one of the following to make curve adjustments:
To adjust the luminance, click to add a point on the Luma or Master graph and drag to change the shape of the curve. Bowing the curve
upward lightens the clip and bowing the curve downward darkens the clip. The steeper sections of the curve represent portions of the
image with greater contrast.
To adjust both the color and luminance using the RGB Curves effect, click to add a point on the appropriate graph to adjust all color
channels (Master), the red channel, the green channel, or the blue channel. Drag to change the shape of the curve. Bowing the curve
upward lightens the pixel values and bowing the curve downward darkens the pixel values. The steeper sections of the curve represent
portions of the image with greater contrast.
You can add a maximum of 16 points to the curve. To delete a point, drag it off the graph.
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