GRASS VALLEY LDK 3000+, User Manual

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38 LDK 3000+ High-Definition Camera Head User’s Guide (v1.0)
Chapter 4 - Operating instructions
Some lenses also require a manual calibration of the lens ring positions. If this is the case, a
message (“CLASS: Turn lens rings”) is briefly shown in the viewfinder. Turn both zoom and
focus ring all the way from one end to the other.
After startup when CLASS is active, a message (“CLASS: Active”) is shown in the viewfinder.
☞
Note
☞
Note
In the (very rare) occasion that lens aberration data becomes corrupted, a reset of the lens data
can be forced. Go to the
LENS > CLASS > RESET CLASS DATA
menu and select
START
.
4.5.3 Auto iris
If required switch on the auto iris function in the
LENS
menu. You can also select the
parameters associated with the auto and the momentary iris in this menu.
☞
Note
☞
Note
When your lens has an auto iris switch, make sure it is set to the On position.
4.5.4 Extended auto iris
The extended auto iris function automatically regulates the video signal level by adjusting the
iris opening and the gain level to suit the ambient lighting conditions.
☞
Note
☞
Note
Make sure that the SW2 button is assigned to EIris Extended Auto Iris in the
INSTALL > BUTTONS > SW2
menu.
To switch on the extended auto 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 automatic
extended auto iris function is displayed. Press the button twice in quick succession to toggle
between on and off.
When extended auto iris is on, the Non-standard indicator in the viewfinder lights, and gain
and exposure controls are blocked. The parameters for the extended auto iris function can be
set in the
LENS
menu.
Tip
✎
Use the Extended Auto Iris function to keep a constant depth of field while shooting.
4.5.5 Precision focus
☞
Note
☞
Note
Set the Lens I/F to digital in the
LENS
menu before using precision focus.