Adjusting The Black Balance - Panasonic AJ AJ-HDX900 Operating Instructions Manual

Chapter 4 Adjustments and settings for recording

4-2-2 Adjusting the black balance

The black balance needs to be adjusted in the following
cases:
≥ When the unit is used for the first time
≥ When the unit is used after it has not been used for a
prolonged period of time
≥ When the unit is used in an ambient temperature which has
fluctuated significantly
≥ When the value selected for the gain switch has been
changed
≥ When the gamma ON/OFF setting has been changed
1
Set the switches as shown in the figure.
AUTO W/B BAL switch:
Use this to execute ABB.
2
Set the AUTO W/B BAL switch to the ABB position, and
then release it.
The switch returns to the center, and the adjustment is
performed.
3
While the adjustment is in progress, the following
message appears on the viewfinder screen.
<Note>
While the adjustment is in progress, the lens aperture is
automatically set to CLOSE.
4
Adjustment is completed in several seconds.
message similar to the one shown in the figure below
now appears.)
The adjustment value is automatically saved in the
memory.
34
OUTPUT: CAM
A B B A C T I V E
A B B O K
<Notes>
≥ Check that the lens connector has been connected
and that the lens aperture is set to CLOSE.
≥ While the black balance is being adjusted, the gain
selector circuit is switched automatically.
Flicker or noise may appear on the viewfinder screen,
but this is not indicative of malfunctioning.
≥ If the black shading is still unsatisfactory although the
"ABB OK" message is displayed, perform menu
operations to open the <BLACK SHADING> screen
from the MAINTENANCE page, move the arrow mark
(>) to the DETECTION item, press the JOG dial
button, and proceed with the black shading
adjustment. If the ABB switch is held down for 8 or
more seconds, the black shading can be automatically
adjusted after the ABB operation. (See the SHD.ABB
SW CTL item under "7-5-5 SW MODE.")
≥ If the AUTO W/B BAL switch is pushed down to the
ABB position again while the black balance is being
automatically adjusted (ABB ACTIVE), the adjustment
will be aborted.
The adjusted value in this case is the value before
automatic adjustment was performed.
≥ If a lens without a lens connector is used, execute the
auto adjustment of the black balance while the lens
aperture is securely closed.
Black balance memory
The values stored in the memory are retained even after the
unit's power has been turned off.
(A
(continued)