2017

(a) Spill Colour pot (b) Auto CC button in Range menu (c) Spill fields
When you sample an image to generate a key from a Range menu, the sampled colour in the Spill colour
pot is also updated. However, the inverse is not true—if you sample a colour using the Spill colour pot,
sampled colours used to generate keys are not updated. You can therefore sample colour spill without
affecting the original sample.
NOTE To apply these settings to the key, the Auto CC button must be enabled.
To remove colour spill from a key:
1 Click the Result node so that you can see the changes in the right side viewer. If you do not see the
result, see
Setting Up Viewports for Keying (page 679).
2 Enable Auto CC in the Colour menu to apply the Spill settings to the front clip.
3 The Spill colour pot displays the colour that will be suppressed in the clip. By default, the original
colour extracted from the key-in clip is displayed. In many cases, you can use this colour because the
colour spill is the same colour as the original colour. However, if the colour spill is not the same, change
the colour sample. Click the colour pot, use the colour picker to sample the colour spill in the image
window, and then click the colour pot again.
NOTE When you select the colour you want to key from the Master Keyer menu, the colour that appears
in the Spill colour pot is automatically updated to match the key colour. However, the inverse is not
true—when you sample a colour from the Spill colour pot, the sampled colour used to generate a key is not
updated.
4 Drag in the Spill fields to remove the colour spill.
To:Drag:
Suppress the primary sample colour where there is colour spill (along the edges of the
key).
Range
Modify colours that are adjacent to the primary sample and further remove colour spill.Hue
690 | Chapter 16 Chroma Keying and Working with Green Screens