48 LDX 86 HS/XS HiSpeed/XtremeSpeed HD camera User’s Guide (v1.0)
Chapter 4 - Operating instructions
In the (very rare) occasion that lens aberration data becomes corrupted, a reset of the lens data
can be forced:
Go to the CONFIGURATION > LENS > LENS SETTINGS > CLASS > RESET CLASS DATA menu
and select Start.
4.8.3 Auto Iris
If required, switch on the Auto Iris function in the LENS menu. You can also change the settings
associated with Auto and Momentary Iris in this menu.
When your lens has an Auto Iris switch, make sure it is set to the on position.
4.8.4 Extended Iris
The Extended Iris function automatically adjusts the video signal level by adjusting the iris
opening, the gain level and the exposure time to suit the ambient lighting conditions.
Make sure that the SW2 button is assigned to EIris (‘Extended Iris’) in the
OPERATOR TOOLBOX > USER BUTTONS > SW2 menu.
To switch on the Extended Iris function use the assignable button SW2 at the left-front side of
the camera. When this button is pressed once, the current value of the Extended Iris function
is displayed. Press the button twice in quick succession to toggle between on and off.
When Extended Iris is on, the non-standard indicator in the viewfinder lights, and gain and
exposure controls are blocked. Settings for the Extended Iris function can be changed in the
PRODUCTION SETUP > EXPOSURE > EXTENDED IRIS menu.
You can use Extended Iris to maintain a constant depth of field while shooting.
4.8.5 Precision focus
The camera supports the precision focus feature which is offered by some advanced (digital)
lenses. This system automatically focuses the image within a user defined focus frame on the
screen. When precision focus is enabled on the lens, the focus frame is superimposed on the
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