Panasonic AG-AC160A Operating Instructions Manual page 22

Adjusting black balance
To reproduce black accurately, align the zero level
of the primary colors RGB.
When the black level is wrong, not only the
reproduction of black is bad, but also
the tone of the whole screen becomes bad.
Usually there is no need to adjust black balance,
but adjustment is required in the following cases.
• When using the camera for the first time
• When using the camera after not using it for a
long time
• When using in conditions where the surrounding
temperature has changed greatly
• After changing the GAIN and shutter speed
• After switching from <PB> mode to <CAMERA>
mode
• After changing [SYSTEM FREQ]
Press the <AWB> button to adjust white balance
automatically, and continue to press it to adjust
black balance. Do so after preparing conditions to
adjust white balance.
Message during adjustment:
[ABB ACTIVE]
Message when adjustment is completed:
[ABB END]
• Even when the [ATW] function is in use,
continue to press the <AWB> button to adjust
black balance.
• Black balance cannot be adjusted during
shooting.
22
[ATW] (Auto Tracking White) function
The [ATW] function automatically decides the
shooting environment and always automatically
adjusts for optimal white balance during shooting.
The [ATW] function can be assigned to the
<WHITE BAL> switch (either <A>/<B>/<PRST>
position) in the [ATW] item on the setup menu [SW
MODE] screen. (Page 88)
Also, the factory setting allows the [ATW] function
to work in auto mode.
(Page 88)
Natural light sensor
• Some adjustment error may occur depending
on the environment.
• Perform white balance adjustment (Page 20)
when high accuracy white balance adjustment
is required.
• This camera is equipped with a natural light
sensor to assist the [ATW] function. When
shooting using the [ATW] function, do not block
the natural light sensor with your hand.