T720 Series Microscope
AmScope Proprietary Page 40 of 46
Field of View and Working Distance
Field of view is how much of the specimen you can see
through the eyepiece. The linear field of view of the
eyepiece is divided by the magnification of the objective.
The higher the magnification, the smaller the field of
view.
Working distance is the distance between the
bottom of objective lens and the stage. You
change the working distance when you use the
coarse focusing knob.
Together, working distance and field of view
determine how much of the specimen you see
and how closely.
Focusing Knobs
Coarse Focus: This is the large knob on the side of the
microscope that moves the objective lens up and down. It
is used in conjunction with the fine focus. Do not use this
knob with the 100X objective lens.
Fine Focus: The outer knob, used to fine-tune the focus of
a specimen in conjunction with the coarse focus.
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