Autodesk 62205-051408-9001 User Guide - Page 688

25 Color Warper • Adjust the luma and chroma content in the shadows and highlights, including the black and white points. • Increase color saturation without changing luma. • Modify the luma and chroma content using the Gamma controls. 4. To sample the color you want to suppress, enable Plot and then sample the image. The sample (outlined in red) appears in the vectorscope. 5. While monitoring the 2D vectorscope and image, drag the Suppress trackball toward the color you want to suppress. As you drag the trackball, the sample area will move closer to the center of the 2D vectorscope. For example, to suppress yellows, move the trackball toward yellow; as the yellows disappear from the image, the sample area moves toward the center of the 2D vectorscope. Note: Disable Show Source and Show Result in the vectorscope to only view the sample. 6. Release the trackball. 7. To further increase the suppression of the same color, use the trackball to move the color closer to the center of the 2D vectorscope. Improving Contrast Poor image contrast can be caused by various factors. For example, when you remove a color cast from a clip, it may become washed out. Washed-out clips usually occur when the image contrast and saturation levels are too low. To complete the task of balancing the colors in the clip, use the tools in the Basic controls to correct the poor contrast. To improve contrast and the overall look of the clip, you can: Adjusting Shadows and Highlights to Improve Contrast When there is not enough, or too much, black or white in a clip, it will lack contrast. If you want to improve the contrast by changing both the chroma and luma content, including the black and white points, use the tools in the Basic controls to adjust the shadows and highlights in the image. To adjust the shadows and highlights to improve contrast: 1. Click Basic to display the Basic controls. 2. Enable Plot and then CTRL-drag the cursor over the portion of the result clip containing black or white. In the Basic controls, a red plot line is displayed in the 2D luma histogram indicating the luma value of the sampled blacks. In the vectorscope, you can view the saturation and hue. 3. Use the 2D luma histogram and 2D vectorscope to determine which controls you need to use (such as the Black field, or the Shadows and Midtones trackballs). 4. While viewing the 2D luma histogram, adjust the black level to modify the luma value. The Plot sample is updated as you drag the field. 5. While viewing the 2D vectorscope, drag the Midtones and Shadows or Highlights trackballs toward the color you want to increase in the blacks or whites. The Plot sample is updated as you drag the trackball. 672