Activate a Perspective or Orthographic viewport. > Viewport Navigation controls > Zoom Extents flyout
Keyboard > ALT+CTRL+Z
Zoom Extents centers all visible objects in an active Perspective or Orthographic viewport. This control is useful when you want to see every object in a scene in a single viewport.
Zoom Extents Selected centers a selected object, or set of objects, in an active Perspective and Orthographic viewport. This control is useful when you want to navigate to small objects lost in a complex scene.
Procedures
To zoom all objects in one viewport:
Activate the Perspective or Orthographic viewport you want to zoom.
Click Zoom Extents.
The viewport displays all objects in the scene.
To zoom on a specific object:
Activate the Perspective or Orthographic viewport you want to zoom.
Select the object by clicking it, or press H to select it by name.
Click Zoom Extents Selected.
The viewport displays the selected object.
To exclude an object from Zoom Extents:
Use this procedure, for example, to ignore lights that are far away from the other objects in the scene.
Click an object to select it.
Right-click the object and choose Properties.
In the Display Properties group, turn off the By Layer button.
Turn on Ignore Extents.
The object will now be excluded by Zoom Extents and Zoom Extents Selected.
Interface
Zoom Extents: Centers and magnifies views in the active viewport so all the visible objects in scene are shown. Objects can be excluded from zoom extents all if the Ignore Extents box is turned on under Object Properties.
Zoom Extents Selected: Centers and magnifies the view in the active viewport so just the selected objects or sub-object selections in the scene are shown. If no objects are selected, the effect is the same as a normal Zoom Extents.