Field of view
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The field of view 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 sensiti
In computed tomography (abdominal CT pictured), the field of view (FOV) multiplied by scan range creates a volume of voxels.
Field of view diameter in microscopy
Focal length
Videos
The focal length of an optical system is a measure of how strongly the system converges or diverges light; it has units of length, and for an idealized thin lens is equal to the distance between the l
Field of view
…of view in degrees. Let M be the linear field of view in millimeters per meter. Then, using the small-angle approximation: In machine vision the lens focal length and image sensor size sets up the fixed relationship between the field of view and the working distance. Field of view is the area of the inspection…
Sketch of human eye showing rear focal length f′ and EFL
28 mm lens
50 mm lens
70 mm lens