3D Layers in After Effects

There is now available a 3D pull-down menu in the Composition Window for choosing Cameras. The choices there reflect the need to see your composition from numerous angles so to best position the 3D elements correctly. The difference is akin to trying to direct actors while viewing them through a pane of glass or while standing among them on stage.

The selection includes three types of view panes:

Orthogonal (Front, Top, Left, Etc)
Custom Views (3 Standard views)
Camera Views (Active Camera by default plus any Cameras added to Comp)

To toggle between 3D views press F10, F11, or F12.

It is highly recommended that you change the pane layout from 1 View to 2 or more views when working in 3D Layers to allow you to fully grasp where your elements are sitting within the 3D workspace.