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VIVOTEK
50 - User's Manual
Measurement Window: This function allows users to configure measurement window(s) for low
light compesation.
■ Full view: Calculate the full range of view and offer appropriate
light compesation.
■ Custom: This option allows you to manually add specific windows as measuring areas. The
measuring window refers to “weighed window“ where the lighting condition within the particular
area is taken into account. Camera firmware then adopts the weighed averages method to
calculate the value.
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 Manual mode according to your needs.
Manual: Select Manual to set a xed exposure time and gain. Then, tune the slide 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 not be
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.
■ Iris mode:
Select Indoor or Outdoor iris mode to adapt to the installation. The preset iris aperture
setting will apply.
Include
Include
Exclude x
Exclude
x
x
x
A total of 9 inclusive and exclusive
windows can be created for a view. You
can create Exclude windows for the
camera to ignore the lighting condition
of certain areas.
Note that the title pane of the Include/
Exclude windows is not included into
the calculation.
■ BLC: When selected, a BLC window
will appear on screen meaning that the
center of the scene will be taken as
a weighed area. This option enables
light compensation for images that are
too dark or too bright to recognize; for
example, for the dark side of objects
that is posed against bright sunlight.