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Description: This script will attempt to fix a camera that may cause rendering problems. The solution may not be as simple as just "making a new one" and re-animating. I've had problems in the past where cameras look 100% fine in the viewport, but when rendering they pose to have very odd results. This comes from scaling the camera off of its 1,1,1 default. In Maya, cameras do not like to be scaled. This is not ALWAYS the case, but be warned if you do, you may get some odd results from time-to-time.
Usage: Select a camera and source the script. Simple as that...
What does it do? Creates a brand new camera in the exact same location from scratch (as your current camera) Creates a point/orient constraint to the selected camera so wherever it goes or whatever it does, your new camera will do. Also looks at the film back and focal length and marries them together so if you're zooming or have a specific one, all still works. Will even match up your depth of field.