Command entry:Activate Perspective viewport.

Status bar

Viewport controls

Field-of-View flyout
The Field Of View flyout is available only for Perspective viewports. It lets you change the field of view, or zoom to a particular
region.
The flyout has two options:
-
Field of View (FOV): Adjusts the amount of the scene that is visible in a viewport and the amount of perspective flare.
-
Zoom Region: Magnifies a rectangular area you drag within a viewport.