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Auto-Scale Capabilities
The auto-scale button can automate the adjustment process for you, as controlled by the Animate listbox and Maximum auto-zoom settings.
With Animate set to Neither, Auto-scale will pick the smallest zoom required to avoid missing pieces on the output image sequence, up to the specified maximum value. If that maximum is reached, there will be missing sections.
If you change the Animate setting to Translate, though, Auto-scale will automatically add delta U/V keys, animating the POI position, any time the zoom would have to exceed the maximum.
Rewind to the beginning of the shot, and control-right-click the Delta-U spinner, clearing all the position keys.
Change the Animate setting to Translate, reduce the Maximum auto-zoom to 1.1, then click Auto-Scale. SynthEyes adds several keys to achieve the maximum 10% zoom. If you play back the sequence, you will see the shot shifting around a bit—10% is probably too low given the amount of jitter in the shot to begin with.
The auto-scale button can also animate the zoom track, if enabled with the Animate setting. The result is equivalent to a zooming camera lens, and you must be sure to note that in the main lens panel setting if you will 3-D solve the shot later. This is probably only useful when there is a lot of resolution available to begin with, and the point of interest approaches the boundary of the image at the end of the shot.
Keep in mind that the Auto-scale functionality is relatively simple. By considering the purpose of the shot as well as the nature of any problems in it, you should often be able to do better.
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