Blender add-on: Camera additions
In 3D view, it adds these actions to the View|Cameras menu:
View → Camera : set the current camera to the 3D view
View → Add Camera : add a new camera and set it to the 3D view
Camera → View : Set the 3D view to the current camera
Previous Camera : Use the previous camera (if multiple cameras are set up)
Next Camera : Use the next camera (if multiple cameras are set up)