I'm trying to animate the look of 3D text animating to 2D. So to do this I'd like to animate the perspective camera. Is it possible to keyframe the camera attributes from the default settings in the perspective camera to the equivalent of an orthogonal front view camera?
You could probably do this by forcing the 'Orthographic' attribute to be keyable, but I don't think it would be a good idea--you certainly can't make a smooth transition between the two. Just pull your camera way back and narrow the field of view to the point where the image appears to be 2D, that's my recommendation.