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![](https://files.manualsfile.com/54990457-ds-2td4228-10-s2/bg50.png)
10.5.7 BLC
If you focus on an object against strong backlight, the object will be too dark to be seen clearly. BLC
(backlight
compensaon) compensates light to the object in the front to make it clear. If BLC mode
is set as Custom, you can draw a red rectangle on the live view image as the BLC area.
10.5.8 WDR
The WDR (Wide Dynamic Range) funcon helps the camera provide clear images in environment
with strong illuminaon dierences.
When there are both very bright and very dark areas simultaneously in the eld of view, you can
enable the WDR funcon and set the level. WDR automacally balances the brightness level of the
whole image and provides clear images with more details.
Note
When WDR is enabled, some other funcons may be not supported. Refer to the actual interface
for details.
10.5.9 White Balance
White balance is the white rendion funcon of the camera. It is used to adjust the color
temperature according to the environment.
10.5.10 DNR
Digital Noise Reducon is used to reduce the image noise and improve the image quality. Normal
and Expert modes are selectable.
Normal
Set the DNR level to control the noise
reducon degree. The higher level means stronger
reducon degree.
Expert
Set the DNR level for both space DNR and me DNR to control the noise reducon degree. The
higher level means stronger reducon degree.
Thermal & Opcal Bi-spectrum PTZ Network Camera User Manual
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