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4-6. White Balance (WHITE BAL)
A color characteristic
of illumination is called color
temperature and it is measured in units of Kelvin (°K).
The higher color temperature
are considered
bluish
while the lower color temperatures are more reddish. A
camera shooting a scene with high color temperature
illumination produces a bluish picture, Likewise, it will
produce a reddish picture with lower color temperature
itumination.
Therefore,
in order for the camera
to
reproduce a scene accurately, it needs to be white
balanced before shooting.
10000°K
Blue sky
g000°K
Rainy
g000°K
AWC
Cloudy
Pratt
7000°K
LR
D
Partly cloudy
6000°K
Oo
ns,
Fluorescent
5000°K
@
lamp
AX
A
Nis
F
4000°K
Halogne lamp
OP
ACS
Tangsten
3000°K
"A
2000°K
N
'
À
Candle
1000°K
Fig. 16
The white balance control mode can be chosen among
the auto-tracing white balance (ATW), the manual white
balance
control
(MANU)
and
one-touch
automatic
white balance control (AWC) mode by this menu.
*e
SET
UP tn
SYNC
INT
SHUTTER
OFF
CANERR
ID
OFF
ELC
OFF
AGÉ
ON
WHITE BAL
AUC
(PUSH
SW)
END
Fig. 17
4-6-1. Auto-Tracing White Balance Mode (ATW)
1;
Inthe ATW mode the color temperature of the illuminant
is continuously monitored and the white balance of the
camera is automatically set.
The
ATW
mode
has
a
range
of operation
from
approximately 2600°K - 6000°K. Beyond this range,
use the Automatic White Balance (AWC) mode.
The
ATW
mode
might
not
produce
optimum
color
rendition in the following conditions.
When
the scene
consists
mostly of strongly colored
objects or illumination such as a blue sky or during
sunset.
2.
When the scene is dimly lit.
In these cases, use the AWC mode.
4-6-2. Automatic White Balance Control Mode (AWC)
In this mode, accurate white balance may be obtained
within a range of operation from approximately 2300°K
- 10000°K.
Note:
Refer to the SEFUP
OPERATION
section for detailed
procedure.
4-6-3. Manual White Balance Control Mode (MANU)
In this
mode,
the
white
balance
can
be
obtained
manually by adjusting R-Gain and B-Gain on-screen
menu.
4-7. Special Menu (SPECIAL)
The chroma level, chroma phase (HUE), aperture level
and pedestal level of this camera can be adjusted by
using this special menu.
Note:
Refer to the SETUP
OPERATION
section for detailed
procedure.
#* SPECIAL
**
CHROMA
GAIN
HUE
AP GAIN
PEDESTAL
RET
END
Fig. 18
4-8. In the ELC mode, a continuosuly variable electronic
shutter
is employed
to
automatically
control
the
exposure times in the CCD image sensor, according
to the tncoming light level.
With this mode selected,
fixed or manual iris lens can be used.
SETUP OPERATION
Before entering the Setup menu, remember the ALL
RESET operation in order to escape from the confusion
of setting
up the each
item to the factory
setup
condition as follows.
Confirm that the normal camera
picture is displayed
and no setup menu is displayed.
While pressing both the~Left Button (WHT BAL) and
Right Button
(GAIN
UP) together,
press
the Setup
Mode Button (SET UP} for a while in order to reset
all adjustments and selections to the factory setup
condition.
Up Button
© SET
Left Button
Setup Button
Right Button
Down
Button
Fig. 19
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