Vivotek IP8173H User Manual download pdf (Page 51)

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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

congurable since the sensor library will automatically adjust the value according to the ambient

light. Then you can congure 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 congure 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 specied. 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 conguration.

■ 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�

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Vivotek IP8173H User Manual Page 51