Graphics Reference
In-Depth Information
The images above show the progression from step 3 to step 4. And yes, it's
that simple. Many of the other Chroma Key utilities available call for many more
steps to achieve what Keylight does in just a few mouse clicks.
Chroma Keying - Color Key Effect
If you don't have the Professional
version of After Effects, the Color
Key filter and the Simple Choker
can achieve adequate Keys on
well-lit smooth color backgrounds.
Color Key works similar to the
Luma Key filter but replaces the
black and white levels with a wide-
range color picker, where any color
can be isolated and removed.
1
Deactivate Keylight in layer 1's Effect Controls menu.
2
Add
Effect
Keying
Color Key
and then add
Effect
Matte
Tools
Simple Choker
.
3
Use the
Key Color
eyedropper to select the green sample.
4
Set the following values:
Color Tolerance
50,
Edge Feather
2.0,
and
Choke Matte
3.10.
5
Save your work.
The images on the next page compare the results of the two methods. While
the Color Key composite (left image) looks to be cleaner with smoother edges,
