And, btw, you can carry more than one battery easily. No camera has a battery that lasts more than an hour or so of actual video (which is a lot). $449.
Look at the Panasonic FZ200 - f2.8 lens that goes from (effectively) 28-672mm all at f2.8. Again, that is 672mm at f2.8! It is full HD. And you can get a simple extender that increases the telephoto range to over 1100mm at f4.
And, btw, you can carry more than one battery easily. No camera has a battery that lasts more than an hour or so of actual video (which is a lot). $449.