Apple Motion 5.1.1 - Manual (Page 476)

Chapter 12 Keyframing 476
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Continuous: This method behaves like Bezier interpolation, but without access to the handles
(which are calculated automatically). The parameter begins to change gradually, reaching its
maximum rate of acceleration at the midpoint, then tapers off slightly as it approaches the
second keyframe. When applied to a keyframe, the segments before and after the keyframe
are affected. When applied to a curve segment, the segment between the keyframes
is affected.
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Exponential: This method creates an exponential curve between the current keyframe and the
next, changing the value slowly at first, then reaching its maximum rate of acceleration as it
approaches the next keyframe.
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Logarithmic: This method creates a logarithmic curve between the current keyframe and
the next, changing the value rapidly at first, then slowing drastically as it approaches the
next keyframe.
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Ease In: This method has a reverse-inertia effect, so a value change slows coming into a
keyframe. When applied to a curve segment, the value change eases into the segment. This
option is available only when you Control-click a keyframe; it is not available in the Animation
pop-up menu.
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Ease Out: This method creates a typical inertia-like lag, so a value change begins more slowly
coming out of a keyframe. When applied to a curve segment, the value change eases out of
the segment. This option is available only when you Control-click a keyframe; it is not available
in the Animation pop-up menu.
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