The term HFoV or AoV Name common to express the angle of view. The unit of measurement, viewing angle, degrees (such as, phase 60, phase 120, phase 180). and to the range covering the horizontal shed.

In addition, HFoV terminology the other, there are also application less. These two terms are of the FoV, vertical or VFoV and FoV diagonal (Diagonal FoV). These numbers may also be on the profile of the lens listed, but they should make them with HFoV wrong.