The angle of view is the lens’s subtended angle. This means the angle, measured in degrees, from the point of the camera. 

 

 

The angle of view describes the dimensions of a scene as imaged by the camera. It means basically the same thing as field of view, but refers to the camera’s field of view instead of a person’s field of view.

 

 

A wide angle lens has an obtuse (greater than 90 degrees) angle of view. A telephoto lens, on the other hand, has an acute (less than 90 degrees) angle of view. (Technically a normal or standard lens also has an acute angle, but it defines approximately what we see and perceive in our normal range of view.)