UserManualofIRNetworkSpeedDome
49
underbacklightcircumstances.Whentherearebothverybrightandverydarkareas
simultaneouslyin thefieldofview, WDR balancesthe brightnesslevel of thewhole
imageandprovideclearimageswithdetails.
You can enable or disable the WDR function as shown in Figure 6Ͳ30. The wide
dynamiclevelrangesfrom0to100.
Figure6Ͳ30 WDR
Note:Thisfunctionvariesdependingonthemodelsofspeeddome.
SlowShutter
Thisfunctioncanbe usedinunderexposurecondition.Itlengthenstheshuttertime
toensurefullexposure.TheslowshuttervaluecanbesettoLow,NormalandHigh.
Figure6Ͳ31 SlowShutter
LensInitialization
Thelensoperatesthemovementsforinitializationwhenyoucheckthecheckboxof
LensInitialization.
BLC
Ifthere’sabrightbacklight,thesubjectinfrontofthebacklightappearssilhouetted
ordark.EnablingBLC(backlightcompensation)functioncancorrecttheexposureof
thesubject.Butthebacklightenvironmentiswashedouttowhite.
WhiteBalance
The White Balance mode can be set to Auto, MWB, Outdoor, Indoor, Fluorescent
Lamp,SodiumLampandAutoͲTrack.
z Auto:
In Auto mode, the camera retains color balance automatically according to the
currentcolortemperature.
z ManualWhiteBalance:
In MWB mode, you can adjust the color temperature manually to meet your own
demandasshowninFigure6Ͳ32.