Dioptric Correction And Parfocality - Leica M125 C User Manual

Dioptric Correction and Parfocality

Leica stereo microscopes are parfocally
matched. The prerequisite for this is the correct
setting of the diopters and the parfocality. The
following adjustments only have to be carried
out once by each user.
Preparations
Move the lever of the video/phototube to
the "observation" position and open the
diaphragm.
If you are using the microscope carrier AX,
set it to stereoscopic observation.
Leica M Series User Manual
Adjusting
1. Set the dioptric correction for both
eyepieces to "0".
2. Select the lowest magnification and focus
on a flat specimen.
3. Select the highest magnification and read-
just the sharpness.
4. Select the lowest magnification again, but
do not look into the eyepieces.
6. Rotate the eyepieces counterclockwise in
the "+" direction as far as they will go (+5
diopter settings).
Eyepieces
7. Look into the eyepieces.
8. Slowly rotate each eyepiece individually
in the "–" direction until each eye sees the
object sharply imaged.
9. Select the highest magnification and refo-
cus if necessary.
Now, if you adjust the magnification from the
lowest to the highest level, the specimen is
always brought into sharp focus. If not, repeat
the process.
70