You might try first targeting the object with the camera; then in motion options, parent the camera to the object, first making sure that in your (I believe ) general options dialogue box the box for parent in place is checked. this will allow the camera to track the object and also to follow the object along its motion path with out being directly on the object. This will allow you to use an envelope for the motion channels you set up for the camera. When you parent it directly to the object, it (the camera) will always point to the pivot point of the object, if this doesn't work, then you can use a null, parent it to the object so you can move it where you like on the object. then target the null with the camera.
:beer:
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