Viewing Tube Adjustment (cont.)
If you are comfortable wearing your 
corrective lenses (contact lenses or eyeglasses) for microscope viewing, leave them
on and your adjustments will be minimal.
2.Focus on the specimen using the fine adjustment knob of the microscope while looking only through one of the eyepieces (if you have one focusable and one non- focusable eyepiece, look through the non- focusable eyepiece at this time). To help focus, cover or close the other eye.
3.Now switch to look only through the other eyepiece (focusing eyepiece) with your other eye. This time, focus the specimen by using the focusing capability in the focus- ing eyepiece.
•Do not raise or lower the stage to focus.
4.Grip the knurl on the focusing eyepiece with one hand and rotate the top of the eyepiece with the other hand until the specimen is in focus with this eye and this focusing eyepiece. This corrects for any vision differences between your right eye and left eye.
5.Now switch to a high magnification objec- tive (not an oil objective) and focus the microscope while viewing with both eyes.
The higher magnifications have a shal- 
lower depth of field. Therefore, after focusing with a high magnification, you will find that when you change to lower magnifi- cations, you only have to adjust the fine focus
slightly, if at all.
Leica DM 500, DM500 B | Manual | 31 |
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