VIVOTEK
74 - User's Manual
BLC (Back Light Compensation): This option will automatically add a “weighted region“ in the middle of
the window and give the necessary light compensation� A white bracket will appear as the area of interest
for backlight compensation�
Exposure control:
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Exposure level: You can manually set the Exposure level, which ranges from -2�0 to +2�0 (dark to
bright)�
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Exposure mode: Select Auto or Fixed mode according to your needs�
Fixed: Select Fixed to set a fixed exposure time and gain� Then, tune the slider bar to set the
Exposure time and Gain Control to the best image quality� A shorter exposure time allows less amount
of light to enter the sensor; while a higher gain control value generates certain amount of noises�
Auto: If you set Exposure mode as Auto, the Exposure time and Gain control will be not congurable
since the sensor library will automatically adjust the value according to the ambient light� Then you can
set iris mode as “indoor” or “outdoor” to reach the best image quality�
2011/03/13 17:08:56