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User's Manual - 51
Exposure control:
■
Exposure level: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark to
bright)�
■
Exposure mode: (Available for IP8173H using a DC-iris lens) - Select Auto or Manual mode
according to your needs�
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 congure iris mode as “indoor” or “outdoor” to reach the best image quality�
Manual: Select Manual mode to set an iris aperture size, xed exposure time, and gain. Then,
tune the slide bar pointers to congure an optimal 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�
• Exposure time: you can split the round pointers on the Exposure time and Gain control
slide bars into two halves and drag them on the bars to designate a range of values in which
firmware can automatically adapt to� Note that Firmware will then automatically tune the
Gain, Exposure time, and Iris opening within the ranges you specied. For example, in low-
light condition, you may prefer a longer exposure time and more electronic gains� However,
the noises in the image will also increase�
• Gain control: Tune the slider bar to set the Gain Control to the best image quality. Higher
gain control value will generate a certain amount of noises, and that the gain control, lighting
levels, and picture performance are closely related�
■ Flickerless
: (for IP8173H using a xed lens) This function helps avoid the ickering on images
because of the fast shutter movement� When selected, the exposure time will be forced to stay
longer than 1/120 second�
Click the Save button to preserve your conguration.
■ BLC (Back Light Compensation): This option allows you to use the center of the current view
as the measuring area� The measuring window refers to “weighted window“ where the lighting
condition within the particular area is taken into account� Camera firmware then adopts the
weighted averages method to calculate the value and provides necessary light compensation�
■
WDR (Wide Dynamic Range) Pro: Default is on. When set to Auto, you can select the sensitivity
and strength of the WDR function� The Low, Medium, High options correspond to the level of
contrast between the overly-lit area and the shaded areas� For example, the High option applies
to a high contrast scenario�