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iris control is activated on the WRC-1, the iris
motor has not yet been connected);
readings with ‘RANGE’ in the second display
line indicate that the adjustment range of a
parameter has been exceeded (example: the
selected speed is not available with this camera);
readings with ‘OFF’ in the first display line
indicate that this function is deactivated on the
camera (example: shutter angle of the 435 is
set manually = ‘OFF ANGLE’).
Correct parameters must be set before the
camera is started!
The handwheel is without function in the main menu.
Press the RAMP button when the camera is running to
start the ramp. The camera can be started, by pressing
the RUN button on the WMU-1.
The ramp can be reversed, by pressing the RAMP button
again: the ramp then reverses its direction until it reaches
the start value again. For best results wait until the end of
the ramp.
Note: To check the image in the viewfinder, the iris
can be opened completely by pressing the
OPEN button. The iris remains open until the
OPEN button is released again.
This does not alter the programmed settings.
The OPEN button is without function while the
camera is running.
By pressing the SET button the currently set shutter angle
(if controlled by the WRC-1) can be displayed in the first
display line, the currently set camera speed is shown in
the second display line.
With most lenses, the T-stops before the end-stops
are not exact due to the tolerances involved. In
order to avoid incorrect exposure, the adjusted
iris range should not contain these values.
With the iris wide open a lens-related reduction
in brightness towards the edge of the image
may occur, looking like an incorrect exposure.
The exact values are dependent on the lens type
and must be determined with test shots.
Controlling the Iris