Focusing - Leica MS5 User Manual

16
Selecting the degree
of eye contact
Soft
eyecups
You do not wear glasses and prefer close contact with 1 O x/21 B
wide-field eyepieces for persons wea ring glasses:
~Holding
t he diopter ring , turn the eye cup
counte rclockwise until it is released .
~Pull
the eyecup upwards.
~Ho l d i ng
the diopter ring,
turn the eye cup clockwise.
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, wh ich can be attached to the in-
tegrated eye cups made of hard plastic to achieve the fo ll owing:
- Prevent eye infections if several users are working at the
same instrument (see p. 7).
- Protect yo ur glasses from being scratched .
The
10X/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 ise or lower the ste re-
omicroscope until the f eature of interest is in focus = working
distance to the objective.
The working distances ofthe various objectives are listed in
the t a bles on pages
62-
66.
• The focusing drive can be operated from either the right or
the left side .
• When fo cusmg on a new object, always start w it h the lowest
magnification, because the larger field of view ma kes the
obj ect easier to find . Afterwards, select the desired magnifi-
cation.
Leic a M Stereomic rosc 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 objective.
~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-foc us 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 firm ly with
both hands and turn them in
opposite directions until you
obta in the required degree of
resistance during focusing.
~Turn
the black ring on the
right-hand drive knob until
you obtain the required degree
of res istance during focusing .
~Hold
the left fine drive.
~Turn
the right fine drive until the desired resistance during
focusing is reached.
Leica M Stereomicroscopes - Operation
17