Leica MS5 - Focusing

16
Selecting the degree
of eye contact
Soft
eyecups
You do not wear glasses and prefer close contact with 1 Ox /21 B
wide-field eyepieces for persons wearing glasses:
~Holding the diopter ring, turn the eye cup
counterclockwise
until it is released .
~Pull the eyecup upwards.
~Ho l d i ng the diopter ring,
turn the
eye cup clockwi se.
Persons wearing glasses need the
whole of the available distance.
Move the
eye cups to the lowest
position.
The 1 D x/ 21 B wide-field eye pieces for persons we a ring glasses
are supplied with soft eye cups, whi ch can be attached to the in-
tegrated
eye cups made of hard plastic to achieve the fo llowing:
- Prevent eye infections if several users are working at the
same instrument (see
p. 7).
- Protect yo ur glasses from being scratched.
The
10 X/ 21 wide-field eyepieces are supplied with laterally
tapered soft eyecups.
Setting the working distance, focusing =obtaining a
sharp image
• To focus, use the fo cusing drive to ra i se or lower the stere-
omicroscope
until the feature of interest is in focus = working
distance to the objective.
The working distances
ofthe various objectives are listed in
the ta bles on pages 62- 66 .
• The focusing drive can be operated from either the right or
the left side.
• When focusmg on a new object, always start with the lowest
magnification, because the
larger field of view ma k es the
o
bj ect easier to find . Afterwards, select the desired magnifi-
cation.
Le ic a M Stereomicrosc opes - Ope ration
Coarse/fine drive
Adjusting the free
mning of the focusing
drive
Focusing drive
MS5- MZ9s
Focusing drive,
coarse/fine
MS5- MZ12s
Focusing drive,
coarse/fine
MZ16, MZ16A
~Place the object beneath the ob jective.
~Engage the lowest magnification
(page
12).
~Look into the eyepieces.
~Using the rotary knob, bring the
object into focus.
~Focus approximately with the
larger knob.
~
Fine-focus with the smaller
(concentric) knob.
Is the focus movement too loose or too tight? Does the outfit
tend to
slide downwards? You can adjust the movement in
accordance with the weight of the outfit and with your own
personal requirements:
~Hold the drive knobs firmly wit h
both hands
and turn them in
opposite directions until you
obtain the required degree of
resistance during focusing.
~Turn the black ring on the
right-hand drive knob
until
you obtain the required degree
of resistance duri
ng focusing.
~Hold the left fine drive.
~Turn the right fine drive until the desired resistance during
focusing
is reached.
Leica M Stereomicroscopes - Operation
17