If you have TT, press ctrl+alt+c to enable full camera movement. Once this is done, the + will continually zoom in, even far into the ground, and you can also zoom very far out using the -. Press page down and page up to move the camera down and up, and use A to move the camera pitch up and Z to move it down. If you dont have TT, get Reyks new editor, it has the option to change pitch as well. This will take awhile to get used to using, but once you know what your doing its pretty easy. Also note that this can only be done in editor. In game you cannot change pitch and such. You can start out with it, but cannot change it.
Look for me on ESO-
Lightsout Unrated name, 1600
Gogos_Mace Rated name, 1650ish