Instruction manual

165
Operation
5.2.7.3 Operating the ICU-1
Before starting the camera, the beginning frame rate and
the corresponding F-Stop have to be set. Once the camera
is running, the ICU-1 will remember the beginning frame
rate and F-Stop. It will then correct the iris for any change
in the camera’s frame rate. Once the camera is stopped
the ICU-1 will set the iris back to the beginning F-Stop.
The ICU-1 will interpolate all F-Stop values that fall in
between two full F-Stops. For linear iris rings, the ICU-1
will use those interpolated values in the space between
the last F-Stop and the end position of the iris ring. For
non linear iris rings, the ICU-1 will extrapolate based on
the values from the last full F-Stop and use the results in
the space between the last F-Stop and the end position of
the iris ring.
The ICU will remember its calibration and the assigned
F-Stops even when it is switched off.
• Set the ICU-1 up as described in the previous chapter.
• Set the beginning frame rate on the camera.
• Set the beginning F-Stop with the ICU-1.
• Start the take.
The ICU-1 will be ready one second after the camera
has reached speed. If the frame rate of the camera
changes during the take, the ICU-1 will automatically
compensate for the change in exposure by changing
the iris accordingly.
Note: The ICU-1 will lock all operating buttons while
the camera is running to prevent unintentional
operation of those buttons.