Autodesk AUTOCAD 2006, Command Reference Manual, Page: 437 / 1490

camera location and target point
camera at B, target at A
camera at A, target at B
For information about entering direction and magnitude angles, see “Point
Specification” on page 408.
Pan
Shifts the image without changing the level of magnification.
Specify displacement base point: Specify a point
Specify second point: Specify a point
Zoom
If perspective viewing is off, dynamically increases or decreases the apparent
size of objects in the current viewport.
Specify zoom scale factor <current>: Specify a scale or press ENTER
A slider bar along the top of the drawing area is labeled from 0x to 16x, with
1x representing the current scale. Moving the slider bar to the right increases
the scale. Moving it to the left decreases the scale.
If perspective viewing is on, Zoom adjusts the camera lens length, which
changes the field of view and causes more or less of the drawing to be visible
at a given camera and target distance. The default lens length is 50mm,
simulating what you’d see with a 35mm camera and a 50mm lens. Increasing
Aerial View Window | 413