White Balance Adjustment; Full Auto White Balance (Faw); See - JVC GY-HD250U - 3-ccd Prohd Camcorder Instructions Manual

e_hd250.book Page 52 Tuesday, October 24, 2006 3:11 PM
PREPARATIONS FOR OPERATION

White Balance Adjustment

Since the color of light (color temperature) varies depending on
the light source, it is necessary to re-adjust the white balance
when the main light source illuminating the subject changes.
White Balance Adjustment
Two kinds of white balance adjustment results can be stored
in memories AUTO A and AUTO B.
Adjustment procedure
1.
Set the following switches.
• Set the POWER switch to ON.
• Set the IRIS mode switch of the lens to A (Auto).
• Set the FULL AUTO switch to OFF.
2.
Set the ND filter switch according to the current lighting.
3.
Set the WHT.BAL switch to A or B.
4.
Place a white object near the center of the screen under
the same lighting conditions as the target subject and
zoom in to fill the screen with white.
5.
Press the AWB (Auto White Balance) button.
"AUTO WHITE A, B OPERATION" is displayed in the view-
finder while the auto white balance adjustment circuit operates.
When correct white balance is obtained, the approximate
color temperature is displayed together with "AUTO
WHITE A, B OK" for about 5 seconds.
Iris mode switch (7 on page 10)
AWB button
MEMO
Fine-tune red and blue to match the white adjusted in white
balance in WHITE PAINT<R>/<B> on the WHITE BAL-
ANCE menu screen. X See page 85.
Error messages
If the adjustment ends abnormally, an error message, as
described below, blinks for about 5 seconds.
• NG: OBJECT (Improper object)
Displayed when there is not enough white color on an
object or the color temperature is not suitable.
Replace the color temperature conversion filter or use
another white object and re-adjust the white balance.
52
ND filter
WHT.BAL
switch
POWER switch
• ERROR: LOW LIGHT (Insufficient illumination)
Displayed when the illumination is dim. Increase the illumi-
nation and then re-adjust the white balance.
• ERROR: OVER LIGHT (Excessive illumination)
Displayed when the light is excessively bright. Decrease
the illumination and then re-adjust the white balance.
During operation
Improper object
Excessive illumination
CAUTION
• Do not adjust using any highly reflective objects, such as
metal, etc., as this may result in improper white balance
adjustment.
• The FAW (Full Auto White balance) function cannot pro-
vide optimum white balance with a subject outside the
FAW adjustment range, for example when it contains
only a single color or not enough white color.
• The accuracy of the FAW (Full Auto White balance) is
inferior to that of the Auto white balance.
• When the power is turned on with the FAW mode
selected, it takes about 10 seconds for the FAW adjust-
ment to be completed.
Do not shoot within this interval.

Full Auto White Balance (FAW)

The FAW function adjusts the white balance value automati-
cally as the lighting condition changes.
This mode is convenient when you have no time to adjust the
white balance or when the camera is moved frequently in
and out of places under different lighting conditions.
Setting procedure
The FAW function can be activated with the FAW item on
the SWITCH MODE menu screen. The FAW function can
be allocated to one of the white balance switching
switches A, B, or PRESET.
X See page 86.
Result message
Insufficient illumination