White Balance (Wb) - Watec WAT-233 User Manual

3.5 White Balance (WB)

Set the white balance (WB) settings. White balance is a function to correct white colored subjects to be shown as white
environments of various color temperatures. Use the LEFT / RIGHT Key to select the WB from ATW, AWB, 3200K, 4300K, 5100K, 6300, ACR, PWB.
*Default : ATW
ATW
5100K
WB
ATW
AWB
PRESET
ACR
PWB
AWB
6300K
ATW automatically controls the white balance and maintains color reproducibility by following the
surrounding color temperature change. Pull-in range is set in advance, it controls only when the
surrounding color temperatures judged to be within the pull-in frame.By setting the pull-in frame,
deterioration of color reproduction can be reduced without taking in pull-in operation in imaging
scenes where monochrome occupies a large proportion in the screen.
AWB controls the white balance irrespective of subject conditions. Since the pull-in control always
operates regardless of the preset pull-in range, the pull-in operates in a wider color temperature
range than ATW, but the pull-in control operates even in the imaging scene where monochrome
occupies a large proportion on the screen and color reproduction may be impaired.
For the preset white balance, you can select the white balance correction value 3200K,
4300K, 5100K and 6300K of the predetermined color temperature.
3200K：(incandescent mode) Correct and fix the white balance based on the white
under the lighting environment close to incandescent mode and fix it.
4300K：(Fluorescent mode 2) Correct and fix the white balance based on the white
under the lighting environment close to the reddish fluorescent light and fix it.
5100K：(Fluorescent mode 2) Correct and fix the white balance based on the white
under the lighting environment close to the bluish fluorescent light and fix it.
6300K：(Sunlight mode) Correct and fix the white balance based on white under
the lighting environment close to sunlight and fix it.
The correction value of each preset white balance can be changed arbitrarily and respectively.
When it is necessary to change, adjust the set value according to the usage environment.
ACR suppresses chroma rolling in the environment where chroma rolling occurs under non-inverter
fluorescent light.
*Chroma rolling is;
When a camera (NTSC) whose driving frequency of the solid-state imaging device is 59.94 [Hz] images
a subject illuminated by a non-inverter type fluorescent lamp operated by a commercial power supply
having a power frequency of 60 [Hz], due to a slight difference in frequency, the color changes occurs in
long-term. This is called the chroma rolling.
While pressing the ENTER key, PWB corrects the white balance according to the color temperature
under the use environment and fixes the operation with the white balance correction amount at that
moment of the Enter key is released. Since it matches the actual lighting, it can correct accurately
even if the color temperature is unknown.
LEFT/RIGHT
3200K
LEFT/RIGHT
ACR
OPERATION
24
4300K
PWB