Programming A Continuous Virtual Move With Multiple Points; Programming Multiple Moves With Pauses; Panning And Zoom With Different Aspect Ratios; Viewing A Session Without Virtual Camera Moves - Adobe 25510629 - After Effects CS3 Professional User Manual

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Programming a continuous virtual move with multiple points

To produce a continuous move that zigs and zags, follows an arc, or changes zoom direction
rather than going straight from point A to point B, add a sequence of pan and zoom points,
one at each position where you want the pan or zoom direction to change. The rate of
movement is a function of distance over time. It is graduated at the start and end of each leg.

Programming multiple moves with pauses

To have the framing hold steady for a period of time between two moves, you must set two
pan and zoom points for the same position. This type of sequence would look similar to the
following:
Time A / Position 1
Time B / Position 2
Time C / Position 2
Time D / Position 3
The difference between Time B and Time C is how long the position remains unchanged.

Panning and zoom with different aspect ratios

If the frame aspect ratio for the session is 16:9 and the frame aspect ratio of the set is 4:3, then
the correct Z setting to zoom in just enough to fill the frame laterally is -0.333. At this setting,
you can change the Y value from 0.333 to -0.333 without any empty lines appearing at the
top or bottom of the visible frame.
If the aspect ratio for the session is 4:3 and the aspect ratio for the set is 16:9, no such change
is necessary because the vertical dimension of the scene is already scaled to fit the visible
frame, and the sides of the scene extend beyond the edge of the frame.
These values assume that the scale of the layer plane is 1:1.

Viewing a session without virtual camera moves

If you programmed pan and zoom points, but want to view the session without panning and
zooming, disable the feature by deselecting Enable.
Positioning layers and performing virtual camera moves
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