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VIVOTEK
User's Manual - 43
Exposure
Advanced Mode
On this page, you can set the Measurement window, Exposure level, Exposure mode, and
Gain control. Detailed configurations will be automatically adjusted since the sensor library will
automatically adjust the value according to the ambient light.
Sensor Setting 1:
For normal situations
Sensor Setting 2:
For special situations
Measurement Window: This function allows users to congure a full-view measurement window or
a cental background compensation window for low light compesation.
■ Full view: Calculate the full range of view and offer appropriate
light compesation.
■ 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.
Exposure control:
■
Exposure level: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark to
bright).
Flickerless: Under some circumstances when there is a differnece between the video capture
frequency and local AC power frequency (NTSC or PAL), the mismatch causes color shifts or
ickering images. If the above mismatch occurs, select the Flickerless checkbox, and the range
of Exposure time (the shutter time) will be limited to a range in order to match the AC power
frequency. See the screen capture above.
You can click and drag the pointers on the Exposure time and Gain control slide bars to specify
a range of shutter time and Gain control values within which the camera can automaticallly tune
to a better imaging result. For example, you may prefer a shorter shutter time to better capture