FOV or Field of view refers to the extent of the observable world that is visible through a camera lens or a viewer’s eyes. It is typically measured in degrees and determines how much of the environment can be seen in a single frame or view. A wider FOV means more of the surrounding environment can be captured or seen, while a narrower FOV results in a more focused view with less environmental context.
We have an excellent camera lens angle preview tool which can demonstrate field of view.