Dahua NVR21-4KS3 Series User Manual page 199

Parameter
Backlight Mode
WB Mode
Day/Night Mode
Description
You can set camera backlight mode.
● SSA: In the backlight environment, the system can automatically
adjust image brightness to clearly display the object.
● BLC:
◇
Default: The device performs automatic exposures according
to the environment situation to make the darkest area of the
video clear.
◇
Customize: After you select the specified zone, the system can
expose the specific zone so that the zone can reach the proper
brightness.
● WDR: In backlight environment, the system lowers the high bright
section and enhances the brightness of the low bright section, so
that you can view these two sections clearly at the same time.
● HLC: In the backlight environment, the system lowers the
brightness of the brightest section, reduces the area of the halo
and lowers the brightness of the whole video.
● Close: Disable the BLC function.
You can set camera white balance mode. The system adjusts the
overall image hue to make the image color display precisely as it is.
Different cameras support different white balance modes, such as
auto, manual, natural light, and outdoor.
Configure the color and black & white mode of the image. This
parameter is not affected by the configuration files.
● Color: The camera outputs color image only.
● Auto: The camera outputs color images or black and white images
according to ambient brightness
● B/W: The camera outputs black and white image only.
● Sensor: Use this mode when there is peripheral IR light
connected.
The Sensor mode is available on select non-IR models.
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User's Manual