to increase the depth of field, you must increase the focal length of magnification.
to increase the depth of field what must you do to magnification?
focal length
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a primary difference between a stereo microscope and a digital microscope is the magnification. with a stereo microscope, the magnification is determined by multiplying the eyepiece magnification times the objective magnification. since the digital microscope does not have an eyepiece, the magnification cannot be found using this method. instead the magnification for a digital microscope was originally determined by how many times larger the sample was reproduced on a 15” monitor. while monitor sizes have changed, the physical size of the camera chip used has not. as a result magnification numbers and field of view are still the same as that original definition, regardless of the size of the monitor used. the average difference in magnification between an optical microscope and a digital microscope is about 40%. thus the magnification number of a stereomicroscope is usually 40% less than the magnification number of a digital microscope.
digital microscope