The Field of View Calculator (FOV) is used to predetermine proper lens selection prior to installation. To do so, enter the camera lens format, the distance to the object, focal length of the lens, and click “Calculate” to see the field of view you can expect with that lens. The Field of View Calculator also works in reverse. If you know the field of view you need, enter it and the distance to the object, along with camera format to find the focal length you will need to get the field of view desired.
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