Russ Andersson explains how to use the Perspective View's locking capabilities in SynthEyes. He demonstrates the lock button, which allows you to toggle between viewing the camera's perspective and freely navigating the scene. The tutorial covers working with stereo shots, showing how to switch between camera views and how to set up multiple Perspective Views with independent settings. Andersson explains how to lock a Perspective View to a specific camera or active tracker host and how to manage these settings through the right-click menu. He also discusses various preferences that control the locking behavior, providing tips for optimizing your workflow.