1.18 Use Cases 149
Note
By default, the motorized lens mount is shipped in "closed loop mode". This means that the
motor will move to and keep its absolute position in a permanent loop. Therefore you will hear a high
frequent sound if you touch the lens or if you adjust the focus manually while the module is operating.
For this reason, we recommend to use the "open loop mode" while adjusting the lens.
In fixed focus applications you might also consider switching to open loop mode. This will also extend
the life time of the motor and reduce operation noise. Please note that the lens will remain at its position
also in open loop mode due to mechanical friction.
The open loop mode can be set via MotorFocusSendBuffer (value: "<20 0>") and then call
MotorFocusSend either in wxPropView (p. 149) or by programming (p. 151).
1.18.6.2.2 Controlling motorized lens mount with wxPropView Figure 1 shows a live snap of a scene with
different focus planes.
Figure 1: wxPropView - Preview with blurred background and focused label
To control the motorized lens mount via wxPropView (p. 68) you have to change the "UserExperience" either to
"Expert" or "Guru". Afterwards, there is a special section in "Digital I/O" called "MotorFocus←-
Control" in the "Device Properties" tab:
MATRIX VISION GmbH
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