Camera Instancer will create a camera that instances the active camera from another composition. You can then cut and paste this camera into any other composition. The modifications that you make to the active camera in the first composition will be duplicated in the second composition. Even if you change the active camera!
Example: In your main comp, you have several precomps - that should all be linked to the same main camera. Possible?
Example: In your main comp, you have a precomp, within that precomp, you have another precomp - that should be linked to the main comp camera. Possible?
Any unsupportet settings, that the script does not support. DOF, Focus distance e.g.
Best regards (and nice script)
Martin