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When you add additional 3-D planar trackers into the scene, you must take some care to make sure that they are compatible with each other, as well as with the viewing camera.
Since each and every planar tracker must match a single camera, all of a camera's 3-D planar trackers must have exactly the same field of view! This is not a limitation or bug... it's just the way physics works! A camera can have only one field of view.
It requires paying attention a little, to make sure you get it right.
First, it's best to create the largest and best 3-D planar tracker first, ie the one that is best for discovering the camera field of view.
For subsequent planar trackers, you should re-use this same field of view. The easiest way to do that is to run the Save Planar FOV as Known Seed script (available on the Planar scriptbar), then set up subsequent trackers with the motion type 3D Known FOV.
If you have already created some planar trackers with mismatched fields of view, you can correct this relatively easily. Determine which field of view you would like to use. Then either apply it to each tracker, or, preferably, to the lens seed FOV track and change the trackers to have Known FOV. The advantage of the latter approach is that this will keep the correct FOV even if you change the tracker's main frame later.
We'll run through three different methods altogether; the first is recommended.
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