When working in 3D, sometimes you don't want elements to be affected by cameras so that the layer or group remains constant throughout your project. For example, you may want a background to remain the same for the duration of your project. One way to achieve that is by making your background 2D.
From this chapter's exercise files, double-click the 10_05 project. The project consists of a gradient background and a PSD file with several layers. Click the disclosure triangle next to the Casa Loma group to reveal its content. There are several groups that have different z-axis positions. You can confirm this by selecting the groups and pressing F1 to reveal the Properties tab of the Inspector. Look at the Z Position co-ordinate and notice how each group has a different number. The reason for this is to ensure that, if we add any type of camera move, it will appear that there is some depth between each of the buildings as we move through the group. The goal...