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Adaptation of imaging systems on binocular
photo tubes*
The binocular photo tubes provided for the Leica
DM IL can be used to adapt an imaging system,
e. g. video camera, reflex camera or automatic
photo system (e. g. Leica MPS 48/52).
Microphotography
Requirements for the adaptation of microphoto-
graphic equipment include a trinocular tube, a
HC PHOTO eyepiece adapter tube and HC PHOTO
eyepieces with 27 mm insertion diameter. If the
microphotographic equipment is not provided
with a special viewing port to limit the format, it
is necessary to use HC PLAN M eyepieces, i. e.
with focusable eyelens and photo graticule
inserted, in the binocular viewing port. For addi-
tional details, please refer to the manual
supplied with the photo equipment.
TV adaptation
Different adapters are available for connecting
TV cameras with c-mount and B-mount objec-
tive thread. The adapters listed in the table
below can be used on all trinocular photo tubes,
although some tubes require an additional photo
adapter tube. The picture area on the monitor
depends on the adatapter used and on the chip
size of the camera.
Calculation of the magnification on the monitor
The magnification V
TV
on the monitor can be
calculated using the equation below or
measured with an object micrometer and a cm
scale.
Recorded picture diagonal in mm for
1-inch
2
/
3
-inch
1
/
2
-inch
1
/
3
-inch
camera camera camera camera
Without zoom magnification:
c-mount adapter 1x HC 16 11 8 6
c-mount adapter 0.63x HC
+)
– 17.5 12.7 9.5
c-mount adapter 0.5x HC ––16 12
c-mount adapter 0.35x HC –––17.1
c-mount adapter 4x HC
+)
4 2.8 2 1.5
With zomm magnification (Vario TV adapter):
c-mount, 0.32 – 1.6x HC ––19
++)
– 518– 3.8
B-mount, 0.5 – 2.4x HC ––16 – 3.3 –
B-mount, 0.5 – 2.4x HC
+)
–––12 – 2.5
+)
in preparation
++)
zoom factor 0.42 x and higher only!
V
TV
= Objective magnification x
Magnification changer* factor x
TV adapter magnification x
Monitor diameter
Chip diameter of camera
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