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AXISQ3505-VEMkIINetworkCamera
VideoandAudio
Note
Toomuchbrightnesscannegativelyimpactimagequalitywhendefogisactive.
WhiteBalance
TochangethissettinggotoSetup>Video&Audio>CameraSettings
Whitebalanceisusedtomakecolorsintheimageappearthesameregardlessofthecolortemperatureofthelightsource.TheAxis
productcanbesettoautomaticallyidentifythelightsourceandcompensateforitscolor.Alternatively,selectthetypeoflight
sourcefromthedrop-downlist.Foradescriptionofeachavailablesetting,seetheonlinehelp
.
ThewhitebalancewindowisenabledfortheAutomaticandAutomaticoutdooroptionsthatappearintheWhitebalancedrop-down
list.Selectoneoftheoptionsfromthedrop-downlisttosetthewhitebalancewindowproperties.SelectAutomatictousethe
defaultsettingsfortheAutomaticandAutomaticoutdooroptions(intheWhitebalancedrop-downlist).SelectCustomtomanually
setareferencewindowforwhitebalanceintheviewarea.
WideDynamicRange
Widedynamicrange(WDR-ForensicCapture)providesbalancedimagesinsceneswhenthereisaconsiderablecontrastbetween
lightanddarkareasintheimage.Thecameraautomaticallyhandlesthetransitionbetweensuchscenesandlow-lightconditions.In
rarelightconditionsdisablingWDRmightgiveabetterimage.
Important
UseWDRincombinationwithautomaticexposurecontrol.Otherexposuresettingscouldgiveundesirableresults.
Note
WDRisonlyavailableifyouhaveselectedacapturemodethatsupportsWDR.SeeCongurecapturemodeonpage12.
ExposureSettings
Exposureistheamountoflightthecamera’ssensorcapturesforascene.Toomuchlightresultsinawashedoutimageandtoo
littlelightresultsinadarkimage.
Exposurevalue-UsetheExposurevalueslidertoadjusttheoverallbrightnessoftheimage.
Exposurecontrol-Selectasuitableoptiontocontrolexposure.
Formostscenes,theAutomaticoptionwillprovidethebestresults.Theshutterspeedisautomaticallysettoproduceoptimum
imagequality.Fluorescentlampsorotherlightsourcescansometimescauseickeringintheimage.Toreduceickerintheimage,
selecttheFlickeroptionthatmatchesthepowerlinefrequency.
TheHoldcurrentoptionlocksthecurrentexposuresettings.
Maxexposuretime-Shutterspeed,alsocalled‘exposuretime’,standsforthelengthoftimethecamerashutterisopen,thereby
exposingthecamerasensortolight.Ifshutterspeedisfastitcanfreezeactioneffectively.Ifshutterspeedisslow,itcancause
movingobjectstoappearblurred.Decreasingtheexposuretimewillreducemotionblur.
Exposurezones-Thissettingdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.
YoucanselectapredenedareabydeningIncludeandExcludewindowswithintheimage.Excludewindowsexcludeareasthatare
toobrightordark,andIncludewindowsincludeareasinthescenethathavebetterlightingwhichwillcontributetotheexposuredata.
TheremustbeatleastoneIncludewindow.TherecanbeatotaloftenIncludeandExcludewindowstotailortheexposurezone.
NotethatanExcludewindowiseffectiveonlywhenplacedinsideanincludewindow.
Tip:IfanareaisextremelybrightdrawanIncludewindowtocoverthewholeareaanddeneExcludewindowswithinitto
blockoutthebrightareas.
Exposurepriority-WhenMotionisprioritizedandmaximumShuttertimeissettoasmallvalue,motionblurintheimageis
minimized.Thiscanbeusefulforrecognitionofmovingobjectssuchaspeopleandvehicles.
However,prioritizingmotionmaycauseanincreaseinimagenoise,especiallyinlowlightsituations.WhenLownoiseisprioritized
andGainissettoasmallvalue,imagenoiseisminimized.Thelesizeisalsoreduced,whichcanbeusefulifstoragespaceor
bandwidthislimited.However,prioritizinglownoisemayresultinaverydarkimage,especiallyinlowlightsituations.
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