In the Curve section you can use the tone curve graphs to change the tonal scale, or overall contrast of a video's image.

You can use one or all of the four tone curve graphs to adjust tonal scale of the video image. Just click on a curve and drag it up or down, or use the tool to target the adjustments on a specific tonal region of the video image.
You can adjust each tone curve graph as follows:
• | RGB channel: use this graph to adjust all of the colors in the video image. If you click on the curve and drag it down, the video image becomes darker. When dragged up, the video image becomes lighter. |
• | Red channel: use this graph to only adjust the red in the video pixels. If you click on the curve and drag it down, you will remove the red from the video image. When dragged up, the video image becomes darker red. |
• | Green channel: use this graph to only adjust the green in the video pixels. If you click on the curve and drag it down, you will remove the green from the video image. When dragged up, the video image becomes darker green. |
• | Blue channel: use this graph to only adjust the blue in the video pixels. If you click on the curve and drag it down, you will remove the blue from the video image. When dragged up, the video image becomes darker blue. |

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Note: click the curve graph's corresponding button at any time to reset a curve back to its default setting.
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