You can create perspective and orthographic
3D views in Revit Architecture.
Perspective 3D Views
Perspective 3D views show the building model
in a 3D view where components that are further away appear smaller,
and components that are closer appear larger.
You can select elements
in a perspective view and modify their type and instance properties.
When you create or view a perspective 3D view, the View Control
Bar indicates that the view is a perspective view.
Orthographic 3D Views
Orthographic 3D views show the building model
in a 3D view where all components are the same size regardless of
the camera’s distance.