Adobe ACROBAT 3D, Manual

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3D navigation tools
When you navigate in 3D, it helps to think that you are viewing the stationary 3D model
from a camera's perspective. You can rotate, pan (move up, down, or side-to-side), and
zoom in or out.
Note: If the 3D toolbar doesn't appear, you may need to enable the 3D content by clicking
in the 3D model area with the Hand tool.
Rotate
Lets you orbit around objects in a scene. You can also rotate an object using the Hand
Tool if Enable 3D Selection For The Hand Tool is selected in 3D section of the
Preferences dialog box.
Pan
Lets you move up, down, or from side-to-side. With the Hand Tool, hold down Ctrl
(Windows) or Command (Mac OS) and drag to pan the object.
Walk
Lets you go in any direction. The Walk Tool is especially useful for architectural 3D
models. It's available when you select the preferences setting that consolidates tools or
when you right-click (Windows) or Control-click (Mac OS) the 3D model and choose
Tools > Walk.
Zoom
Moves you toward, or away from, objects in the scene. When the Hand Tool is selected,
Shift-drag to zoom in or out.
Distance Tool
Lets you measure parts of the 3D model. (See Measuring 3D objects .)
Default View
Returns to the original appearance of the 3D model. You can also select a saved view
from the Views pop-up menu. (See
Creating and managing 3D views .)
Play/Pause buttons
Plays or pauses animation enabled by JavaScript. (See Adding functionality to 3D models
with JavaScript .)
If an object ever moves out of your view, you have, in essence, turned your camera
completely away from the object. Click the Default View icon on the 3D toolbar to
move the object back into view.