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:
■
Exposure level: You can manually set the Exposure level, which ranges from -2�0 to +2�0 (dark to
bright)�
■
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�
Aut
o: If you set Exposure mode as
Auto
, the Exposure time and Gain control will be not configurable
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
