GRASS VALLEY zodiak, User Manual

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Zodiak User Manual 87
3-D Digital Effects Concepts
In the example below, the
TENSION
control is increased to 1.0, so that the
Tension vector is shortened to non-existence through KF2 ( Figure 61 ). The
path enters and leaves the middle keyframe in a straight line as it takes on
an S-Linear motion; decelerating as it enters the middle keyframe and
accelerating as it leaves.
Figure 61. Tension Control Setting 1.0
In the example below, the
TENSION
control has been set to -1.0. This
lengthens the Tension vector, causing the path through the middle key-
frame to be longer and broader (
Figure 62 ). The longer path will appear to
make the image speed up through KF2 as it travels from KF1 to KF3.
Figure 62. Tension Control Setting -1.0
Tension = 1.0
KF1
KF2
KF3
No Tension Vector
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Tension = -1.0
KF1
KF2
KF3
Tension
Vector
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