How Is Magnification Calculated
How Is Magnification Calculated . It is calculated by dividing the focal length of the telescope by the focal length of the eyepiece (focal length of telescope / focal length of eyepiece = overall magnification). Magnification of a lens is defined as the ratio of the height of an image to the height of an object. How to Calculate Total Magnification. from www.learntocalculate.com The magnification (m) of an object can be calculated if both the size of the image (i), and the actual size of the specimen (a), is known; Divide the field number by the magnification number. This is a line drawn near the photograph or drawing which has a label showing the actual length of.