Axis P3225-LV - Page 20

AXISP3225-LVNetworkCamera
Video
Exposurevalue-UsetheExposurevalueslidertoadjusttheoverallbrightnessoftheimage.
Exposurecontrol-Selectasuitableoptiontocontrolexposure.
FormostscenestheAutomaticoptionwillprovidethebestresults.Theshutterspeedisautomaticallysettoproduceoptimum
imagequality.
Iftheimageickersthatcanbecausedbyuorescentlampsorotherlightsources.Toreduceickerintheimage,selecttheFlicker
optionthatmatchesthepowerlinefrequency.
TheHoldcurrentoptionlocksthecurrentexposuresettings.
Maxexposuretime-Shutterspeed,alsocalled‘exposuretime’standsforthelengthoftimethecamerashutterisopen,thereby
exposingthecamerasensortolight.Ifshutterspeedisfastitcanfreezeactioneffectively.Ifshutterspeedisslow,itcancause
movingobjectstoappearblurred.Decreasingtheexposuretimewillreducemotionblur.
Exposurezones-Thissettingdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.
YoucanselectapredenedareabydeningIncludeandExcludewindowswithintheimage.Excludewindowsexcludeareasthatare
toobrightordark,andIncludewindowsincludeareasinthescenethathavebetterlightingwhichwillcontributetotheexposuredata.
TheremustbeatleastoneIncludewindow.TherecanbeatotaloftenIncludeandExcludewindowstotailortheexposurezone.
NotethatanExcludewindowiseffectiveonlywhenplacedinsideanincludewindow.
Tip:IfanareaisextremelybrightdrawanIncludewindowtocoverthewholeareaanddeneExcludewindowswithinitto
blockoutthebrightareas.
Shutter&Gain
NormalLight-UsetheslidertosetthePrioritybetweenLowmotionblurandLownoise.Whenprioritizinglownoise(slider
allthewaytotheleft)theAxisproductwillautomaticallydecreaseshutterspeedasbrightnessdecreases.Whentheshutter
speedreaches1/30stheAxisproductwillincreasegainuntilthesetmaximumgainfornormallightisreached.SelecttheMax
gainvaluefromthedrop-downlist.Thisdenestheupperlimitforgaininthecontextofnormallight.Maxfastshuttersets
shutterspeedlimitinnormallightconditions.Dependingonascenario,theshutterspeedlimitmayneedtobedened.Thisis
donethroughSystemOptions>Advanced>PlainCong.
LowLight-UsetheslidertosetthePrioritybetweenLowmotionblurandLownoise.Whenprioritizinglowmotionblur(slider
allthewaytotheright)thecamerawillautomaticallyincreasegainasbrightnessdecreases.Whenthegainreachestheset
maximumgainforlowlight,thecamerawilldecreaseshutterspeeduntilthesetmaximumshutterforlowlightisreached.
Thisisthedefaultprioritysettingforlowlight.
Irisadjustment
SelectEnableautomaticirisadjustmenttoautomaticallycompensateforchanginglightconditions.Thisoptionisnotavailable
ifaxedirisisused.
UsetheIrisadjustmentslidertosetthepreferredF-value.Thescalerepresentstheamounttheirisisopen.Ifsetto0,theirisis
openedasmuchaspossible.Ifsetto100,theirisisclosedasmuchaspossible.TheactualF-valueisshownbelowtheslider.If
automaticirisadjustmentisenabled,theiriswillstayatthispositionaslongaslightconditionsarefavorable.Iflightconditions
change,theiriswilladjustitselftothebestirissettings.Ifautomaticirisadjustmentisdisabled,theiriswilllockontheset
positionregardlessoflightconditions
Day/Night
TheIRcutlterpreventsinfrared(IR)lightfromreachingtheimagesensor.Inpoorlightingconditions,forexampleatnight,orwhen
usinganexternalIRlamp,settheIRcutltertoOff.Thisincreaseslightsensitivityandallowstheproductto“see”infraredlight.The
imageisshowninblackandwhitewhentheIRcutlterisoff.
IfusingautomaticExposurecontrol,settheIRcutltertoAutotoautomaticallyswitchbetweenOnandOffaccordingtothe
lightingconditions.
TheDay/Nightshiftlevelbarhelpsdeterminewhenthecamerawillshiftfromdaymodetonightmode.Normally,thecamera
automaticallychangesmodefromdaytonightwhenverydark(level100intheslider).BysettingDay/Nightshiftleveltoa
lowervalue,thecamerawillchangetonightmodeearlier.
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