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Field Number

The diameter of the image area seen under an eyepiece or objective. The field number can be determined by the following formula:

Field Number (FN)= (Field of View, FOV) X (Objective Lens Magnification)*

*In case of Stereo Microscope: Objective Lens Magnification X Zoom Ratio

See also Field of View (FOV) , Magnification , Zoom

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