Manual Reference Views and Viewports
Cameras
Each viewport has its own independent camera, called the editor camera. The editor camera is active by default, but you can create and activate your own cameras. Unlike the editor camera, your own cameras are shown as objects in the Object manager.
To link a camera in the scene to the view so that the view ‘looks though’ this camera, choose the desired camera from this submenu.
Choose this command to view the scene from the origin of the active object. Your view will point in the direction of the object’s Z-axis. This command can be useful, among other things, for checking which objects a light source can 'see'. Keep in mind that in some display modes your view may be blocked by the active object’s surfaces.
Alternatively you can click on the corresponding camera’s icon in the Object Manager.
This command activates the editor camera.