You can view your 3D layers from several angles, using orthogonal views or custom views that employ perspective. You can switch views at any time. The orthogonal views (Front, Back, Left, Top, Right, and Bottom) show layers’ positions in the composition but do not show perspective.
You can adjust the point of view and direction of view for the custom views with the camera tools.
You can also choose to look at selected layers or all layers. When you do this, After Effects changes the point of view and direction of view to include the layers that you have selected.