Adobe AFTER EFFECTS 5.5 Help Manual page 136

Adobe After Effects Help
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Creating a bounce or intense peak
Use ease handles to simulate the type of acceleration seen in a bouncing ball. When you
create this type of effect, the Speed or Velocity graph appears to rise quickly and peak.
To create a bounce or peak:
1 In the Timeline window, expand the outline for the keyframe you want to adjust. Then
click the triangle to the left of the property to display the Speed graph or the Velocity
graph.
2 At the desired keyframe, drag the ease handle up until it is near the top of the graph.
Starting or stopping change gradually
Ease handles can also create gradual starts and stops, such as a boat slowing to a stop and
then starting again. When you use this technique, the Speed or Velocity graph resembles a
smooth U shape.
To start or stop change gradually:
1 In the Timeline window, expand the outline for the keyframe you want to adjust. Then
click the triangle to the left of the property to display the Speed graph or the Velocity
graph.
2 At the desired keyframe, drag the ease handle down until it is near the bottom of the
graph.
Extending the influence of an ease handle
Along with controlling the level of acceleration and deceleration, you can also extend the
influence of a keyframe outward or inward in relation to an adjacent keyframe. Influence
determines how quickly the Speed graph reaches the speed you set at the keyframe,
giving you an additional degree of control over the shape of the graph.
As you adjust an ease handle, the effects of the change are visible in the Speed graph and
in the motion path in the Composition window.
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Fine-tuning Animation
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