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3.4 Iris diaphragm
The integrated iris diaphragm is used for continu-
ous adjustment of the depth of field without
changing the magnification. Reducing the
diaphragm diameter enlarges the depth of field.
The size of the light cone is also reduced, and the
brightness of the image decreases.
The clamping screw (12.5) is used as a handle for
adjusting and locking the iris diaphragm:
1 = smallest diameter (largest depth of field)
5 = OPEN.
3.5 Focusing
The coarse/fine drive carries up to 15kg.
– Resolution with a load of 5kg: 1 micron
– Resolution with a load of 10kg: 2 microns
Adjust large distances with the internal coarse
drive (12.6a).
Fine focusing with the external fine drive
(12.6b).
If a motor focus system is used, please
observe the separate operating instructions.
Control ease of adjustment
Does the focusing drive turn too easily / tightly, or
does the equipment move down by itself?
Depending upon weight of the equipment and per-
sonal needs, the ease of adjustment can be
adjusted on an individual basis:
Hold the left or right fine drive (12.6b).
Turn the other fine drive until the desired resis-
tance is reached during focusing.
3.5.1 Fine focusing at the objective
The optional fine focusing (12.4) allows for sensi-
tive and precise focusing in a range of 10mm. The
fine focusing is required for precise focusing at
high magnifications, particularly when using
HR microscope objectives.
Adjust the image sharpness by turning the
knurled ring (12.4).
3.6 Microscopy with/without glasses
– The user can adjust his or her diopter settings
at the rotating eye lenses (11.4) of the eye-
pieces.
– For microscopy work with glasses, the eyecup
(11.3) must be removed or inverted; otherwise,
the complete field of view can no longer be
viewed.
– Bifocal and no-line multi-focal glasses must be
removed for microscopy work.
– For microscopy work without glasses, the user
can set the eyecups (11.3) to his or her individ-
ual needs. Many users desire a close eye con-
tact and use the eyecups.
that every user uses his or her own pair of eye-
cups.
line running all around on the outside of the eye-
piece housing becomes visible. It indicates the
correct position of the eye lens for normal eye-
sight and for users wearing glasses during
microscopy work with glasses.
Leica MacroFluo – Operation
To avoid eye infections, we recommend
If you turn the eye lens, an engraved silver
21
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