Using The Preset White Balance Settings; Light Sources And Color Temperatures; Using The Atw (Auto Tracing White Balance) Function - Sony DXC-D30WSP Service Manual

White Balance Adjustment
The adjustment value is automatically saved in
memory A or B as selected above.
To save the white balance adjustment for different
lighting conditions, repeat steps 2 to 4 above. You can
save two different values for the white balance, in
memories A and B.
Notes
• When using a camera control unit, if the W/B
BALANCE switch of the camera control unit is set to
PRESET or MANUAL, it is not possible to carry out
white balance adjustment on the camera.
• When using a CCU-M5/M5P Camera Control Unit,
make sure that the MODE switch of the CCU-M5/
M5P is in the CAM position.
To recall a white balance value from memory
Before beginning shooting, set the W. BAL switch to
the A or B position. This automatically sets the
camera to the white balance adjustment saved in the
corresponding memory.
If white balance adjustment cannot be
completed automatically
The warning message "AUTO WHITE -NG-" appears
in the viewfinder.
Make the necessary corrections, then carry out the
process again.
Warning messages for white balance adjustment
Message Meaning and corrections to be made
AUTO WHITE Light level is too low.
-NG-
• Increase the illumination level, open
:LOW LIGHT the iris, or use the GAIN switch to
increase the video signal level.
TRY AGAIN
• Check the setting of the FILTER
control.
• After these checks, retry the
adjustment.
AUTO WHITE The subject is not white, or the lighting
-NG- level is too high.
: ?? • Use a white subject.
TRY AGAIN • Lower the illumination level, stop down
the iris, or use the GAIN switch to
decrease the video signal level.
• Check the setting of the FILTER
control.
• After these checks, retry the
adjustment.
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Chapter 5 Adjustments and Settings
AUTO WHITE The color temperature is too low. Try
-NG- the following, in this order of
precedence.
:C.TEMP.LOW
(1) If the FILTER control is in position 2,
CHG.FILTER
3 or 4, change it to position 1, then
TRY AGAIN
retry the adjustment.
(2) Check that the subject is completely
white, then retry the adjustment.
(3) The color temperature may be
outside the range of the camera. Fit
an appropriate color temperature
conversion filter, then retry the
adjustment.
The color temperature is too high. Try
AUTO WHITE
the following, in this order of
-NG-
precedence.
:C.TEMP.HI
(1) If the FILTER control is in position 1,
CHG.FILTER
change it to position 2, 3 or 4, then
TRY AGAIN
retry the adjustment.
(2) Check that the subject is completely
white, then retry the adjustment.
(3) The color temperature may be
outside the range of the camera. Fit
an appropriate color temperature
conversion filter, then retry the
adjustment.
WHITE:PRESET The W. BAL switch is in the PRESET
position.
Move the W. BAL switch to the A or B
position.
BARS The camera is outputting a color bar
signal.
Move the OUTPUT/DL/DCC+ switch to
one of the CAM positions.
Using the Preset White Balance
Settings
The camera provides two preset white balance settings,
for instant shooting with approximately the correct
adjustment.
There are also particular shooting conditions under
which the preset values may give better results than the
human eye adjustment.
1
Set the W. BAL switch to PRESET.
2
Set the FILTER control.
The white balance is automatically adjusted for
3200 K when the FILTER control is in position 1
or 2, and for 5600 K in position 3 or 4.
Light Sources and Color
Temperature
Adjustment of the white balance to match the light
source is essential to ensure correct color rendering.
The color of a light source is indicated as a color
temperature in kelvins (K). It is higher for bluish light,
and lower for reddish light. When the camera is
shipped it is adjusted for use with video lights (halogen
lamps with a color temperature of 3200 K). For use
with other light sources, therefore, adjustment is
required.
First use the FILTER control to set the approximate
color temperature, then carry out white balance
adjustment.
The following table shows typical color temperature
values for different light sources.
Color temperatures of different light sources
Color temperature (K)
Light source
Natural Artificial
Clear sky > 10,000
Light cloud 8,000
Cloudy or rainy Blue light 7,000
skies
> 6,000
Fluorescent light 5,000
(daylight white)
Direct sunlight, Mercury lighting .
noon
Fluorescent light White light
(white)
>
One hour after
sunrise or
Fluorescent light 4,000
before sunset
(warm white)
3,500
Studio lighting 3,200
.
Halogen lamps Yellow light 3,000
and video lights
> 2,500
Thirty minutes Incandescent
after sunrise or lighting
before sunset
Sodium street-
lighting
.
Sunrise or Candlelight Red light 2,000
sunset
Using the ATW (Auto Tracing
White Balance) Function
The ATW function continuously adjusts the white
balance automatically to adapt to changes in lighting
conditions.
Note
Depending on the shooting conditions, automatic
adjustment may not necessarily give optimum results.
For the best possible results, use the W. BAL switch.
To use the ATW function
Press the ATW button turning the indicator on.
This activates the ATW function, and the ATW
indication appears in the viewfinder.
To disable the ATW function, press the ATW button
again, turning the indicator off.
If the ATW function does not operate correctly
A warning massage appears in the viewfinder as
shown in the table below.
Meaning and corrections to be made
Message
:C.TEMP.LOW If the FILTER control is in position 2, 3 or
4, change it to position 1, then retry the
ATW operation.
:C.TEMP.HIGH If the FILTER control is in position 1,
change it to position 2, 3 or 4, then retry
the ATW operation.
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Chapter 5 Adjustments and Settings