The Zoom tool operates like changing the lens on a camera. A value smaller than the default is like using a telephoto lens, whereas a value larger than the default provides a wide angle lens effect.
Note:
Zoom does not apply to an orthographic view.
To zoom in or out
- Click in the Perspective window to make it active.
- Choose View > Zoom
. - Click a mouse button, or enter a view angle through the keyboard (as described below).
To use the mouse
- To create a smaller field of view, click and drag the
to zoom in. - To create a larger field of view, click and drag the
to zoom out. - To increase or decrease the angle of view, click the
. Dragging up or to the right increases it, and dragging down or to the left decreases it.Note:When working with a large model, the speed at which the screen is redrawn during a Zoom operation can be increased by decreasing the Motion Precision in the Preferences > Performance Options
window.
To use the keyboard
You can type the angle of view from the keyboard when the system prompts:
Enter angle of view (ABS):
The values are between 0.2 and 179. Type the angle (preceded by the letter r if you want a relative angle) and press 
(Windows) or 
(Mac).