User Manual

 To limit the output to the intersection of both keys: Turn on the Key Input Matte button
for either Input Link 1 or Input Link 2.
Turning on Matte for Input Link 1 to output the
intersection of two mattes
 To invert the resulting matte you’ve created: Turn on the Output Link Invert button.
When you’re finished, if you choose to subtract Node 3’s key from that of Node 2, the
result should resemble the following screenshot.
The result of subtracting a key of the man’s face from a key
of the overall midtones of the image, and using that to add
a selective green tint
Adding Inputs to Key Mixer Nodes
New Key Mixer nodes have two key inputs by default. If necessary, additional inputs can be
added in order to combine even more keys with one another.
To add inputs to the Key Mixer:
 Right-click a Key Mixer node, and choose Add One Input.
When combining three or more keys, the interaction of keys using the Key palette controls
becomes even more complex, but the rules outlined above still apply.
Chapter – 126 Combining Keys and Using Mattes 2872