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Magnification of a microscope is controlled by the camera length L of the
diffraction pattern (DP), and this is given by
L = D/M --------------------------------------------------------------- [4932]
where D is the distance from the projector crossover to
the recording plane (e.g. phosphor screen)and M is the magnification of the
image in that plane. For instance, if D is about 600 mm and the
screen magnification is 20,000 x then camera length (L) is 0.03 mm.
Different camera lengths are available by turning the magnification knob but this does not affect the imaging magnification when you return to image mode.
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