2017

TIP To get the best key, make sure you have enough processing speed to see the result in real time while interacting
with the Tolerance and Softness boundary handles. In the Modular Keyer, you can use the Crop feature to improve
interaction.
To generate a matte for selective colour correction:
1 Enable Plot and then sample the image.
A black dot representing the sample appears on the hue cube. A red line also appears in the luma range
and the sample is outlined in the 2D or 3D vectorscope. When you create the matte, you can modify
the softness and tolerance boundaries to include or exclude the plotted colour.
2 From the Work On box, select a selective (Sel 1, Sel 2, or Sel 3). With each selective, you define a range
for a matte by selecting colours in the front clip.
3 From the Selective View box that appears, select Sel.
The front clip is displayed as a greyscale image.
4 Click one of the Define controls to set the initial softness and tolerance for the matte.
To define:Click:
The tolerance range based on a sample from the image. You must drag the
cursor over the image to define initial tolerance.
Pick Custom
The tolerance range based on the selected colour channel. For example, click
Yw to use the yellow channel to set the tolerance. The luma range is set to default
tolerance and softness values.
R, G, B, C, M, or Yw
816 | Chapter 19 Colour Correcting