If on, the camera is a perspective camera. For more information on perspective cameras, see Maya camera types.
If on, all camera movements, such as tumble, track, and zoom, are written to the Command History, which lets you undo or redo camera movements or copy camera movements to use them for other cameras or scenes.
Undoable Movements is off by default, but you can still use [ and ] to undo and redo camera moves.
Select this option to ignore the 2D Pan/Zoom settings so that your scene view appears in the full camera view.
This feature is most useful if you have two panels and you want to work in the panned/zoomed detail region in one panel while working in the full camera view in the other.
The default setting is Fill.
Automatically selects a horizontal or vertical fit so that the selected image fills the render frame.
Selects a horizontal fit for the selected image in the render frame.
Selects a vertical fit for the selected image in the render frame.
Selects a slightly larger fit for the selected image in the render frame.