Field of view

Average binocular horizontal FOV for humans
Average vertical FOV of the human eye
Angle of view can be measured horizontally, vertically, or diagonally. Image may show non-aligned lines.

The field of view (FOV) is the angular extent of the observable world that is seen at any given moment. In the case of optical instruments or sensors, it is a solid angle through which a detector is sensitive to electromagnetic radiation. It is further relevant in photography.

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