Loading ...
Loading ...
Loading ...
AXISP3225-VMkIINetworkCamera
Video
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.
ExposureSettings
Exposureistheamountoflightthecamera’ssensorcapturesforascene.Toomuchlightresultsinawashedoutimageandtoo
littlelightresultsinadarkimage.
Exposurevalue-UsetheExposurevalueslidertoadjusttheoverallbrightnessoftheimage.
Exposurecontrol-Selectasuitableoptiontocontrolexposure.
FormostscenestheAutomaticoptionwillprovidethebestresults.Theshutterspeedisautomaticallysettoproduceoptimum
imagequality.
Iftheimageickersthatcanbecausedbyuorescentlampsorotherlightsources.Toreduceickerintheimage,selecttheFlicker
optionthatmatchesthepowerlinefrequency.
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.
Howtosetupnormallightandlowlight
WhenShutterandGainarebothsettoAuto,itispossibletosetthePrioritybetweenlowmotionblurandlownoisemanuallyandto
useadifferentPriorityinNormalLightandinLowLight.
Example
Consideranareawherepeopleorvehiclesmoveduringtheday,butwherethereshouldbenomovementsduringnight.Tobeableto,
forexample,recognizefacesorlicenseplates,movethenormallightpriorityslidertowardlowmotionblur.Atnighttime,motion
detectionismoreimportantthanidentication.Motionblurisacceptableandsincelowlightcancausealotofnoise,move
thelowlightpriorityslidertowardlownoise.
Normallightpriority
1.UsetheslidertosetthePrioritybetweenLowmotionblurandLownoise.Whenprioritizinglownoise(slideralltheway
totheleft)theAxisproductwillautomaticallydecreaseshutterspeedasbrightnessdecreases.Whentheshutterspeed
reaches1/30sthecameraproductincreasesgainuntilthesetmaximumgainfornormallightisreached.
21
Loading ...
Loading ...
Loading ...