G-30-1682-en
OPMI® Lumera® T
Issue 4.0
Printed on 02. 02. 2009
Operation
199
OPMI: Setting the adjustment speeds of focus and X-Y coupling as
a function of the zoom setting
In this mode, you can select dynamic speed control for focusing and the
X-Y coupling.
The depth of field of the optical system changes as a function of the zoom
setting:
– If a large field of view (low zoom value) is used, this results in a large
depth of field, and the focus must be adjusted over a wide range to ob-
tain a sharp image. The X-Y coupling therefore needs to be adjusted
within a wide range to reach the position required. This means that
high adjustment speeds should be used in this case.
– A small field of view (high zoom value), on the other hand, results in a
small depth of field, and the focus has to be precisely set within a small
range to achieve sharp image definition. The X-Y coupling therefore
needs to be precisely adjusted within a narrow range until the position
required is reached. This means that it is advisable to use low adjust-
ment speeds for this purpose.
It is therefore a useful feature that the adjustment speed of the focus and
X-Y coupling can be varied in accordance with the zoom setting.
The instrument has been factory-adjusted for HIGH variation of the ad-
justment speed as a function of the zoom setting. The best effect of dy-
namic speed control is achieved if an adjustment speed of 1.0 has been
selected in the speed mode.
Note:
The dynamic speed control is based on the basic speed selected for fo-
cusing and the X-Y coupling in the speed mode.
If you have already set a high adjustment speed for focusing and the X-Y
coupling in the speed mode, dynamic speed control may possibly not be
effective across the entire zoom range, as the maximum adjustment
speed is reached beforehand.
In the extreme case, if you have set the basic speed for focusing and the
X-Y coupling to the maximum value of 10, dynamic speed control will
have no effect at all.
In configuration mode 1, the bottom section (SPEED FUNCT:) of the dis-
play and key field permits you to select a high, medium or low value for
the dynamic change of speed, or to deselect dynamic speed control:
HIGH
LOW
MEDIUM
OFF
Configuration
mode 1
MODE
STORE MANUAL
FOOT
LEFT C:
PHOTO
FOOT
RIGHT D:
PHOTO
SPEED
FUNCT:
HIGH
Summary of Contents for OPMI Lumera T
Page 18: ...18 Functions at a glance G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009...
Page 31: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 31...
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Page 47: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 47 S88 floor stand 176164...
Page 49: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 49 S8 ceiling mount 176164...
Page 50: ...50 Safety G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 S81 ceiling mount...
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Page 145: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Preparations 145 1 2 3 4 6 8 9 7 5...
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Page 185: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Operation 185 1 2...
Page 231: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Care and maintenance 231...
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Page 243: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 System data 243...
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