Is it at all possible to set up a custom scene where it is not fixed to the frame width aspect of the camera? So that when I zoom in on the model, the scene zooms with it so it is not a set scene the whole time. The example I am using is a building in a field where I want close up shots of the field in the camera with the building.
No, you can't zoom the background with the foreground using a scene map.
The problem is that far away objects increase in magnification slower than objects close to the camera. So in order to zoom the two together, you'd have to know how far away from the camera the background starts. If you know that, then you can simply construct a billboard at a distance from your foreground geometry and map the background image onto it as a label.