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Distance to Tracker (Coordinates)
Use this phase when you have a measurement of the distance from the camera lens to a particular tracker in the scene on a specific frame (typically the beginning or end of the shot). It is important that you know which frame the distance applies to, since with a moving camera, the distance is changing on each frame!
This phase also works if you know the distance from the camera to a tracker on a moving object on a frame; in that case you can scale either the moving object or the entire scene.
Note: this phase does not help for nodal Tripod solves, there is no 3D information to rescale.
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