Axis p5522 - Page 22

AXISP5522PTZDomeNetworkCamera
VideoandAudio
Iris-AlargerF-valuemeanslesslightsensitivity,butalargerdepthofeld.
Gain-Measuredindecibels(dB),gaindescribestheamountofamplicationappliedtoasignal,inthiscasethevisualinformation
intheimage.Ahighlevelofamplicationmayprovideabetterimageinverylowlightsituations.Ahighgainwillalsoincrease
theamountofimagenoise.
Maxexposuretime-Increasingtheexposuretimewillimproveimagequality,butdecreasetheframerate.Theremayalsobe
anincreaseinmotionblur.
Maxgain-MaxgainlimitstheamountofgainthatcanbeappliedtotheimageinExposurecontrolmodeswithautomatic
gainadjustment.
Exposurezones-Thissettingsdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.Forparticularrequirement,selectapredenedarea.
ImageSettings
Important
Theautofocusbehaviorisaffectedbyfactorssuchaslightconditions,contrastsinthescene,andobjectsmovinginandout.In
theseconditionsorscenes,amanualfocuscouldbepreferabletoenhanceperformanceandallowthecameratofocusfaster.
Autofocusenabled-Autofocusenablesthecameratofocusalthoughthedistancetodifferentobjectsofinterestisconstantly
changing.Wheneverthecamera’span/tilt/zoompositionischanged,theautofocusperformsasearchtondtheidealfocuspoint.
Automaticfocusingisenabledbydefault.Ifthefocuspositionischangedmanuallyusingthefocusbar,autofocuswillbedisabled
evenifenabledinImageSettings.Inthiscase,usethePTZcontrolpaneltoenableautofocus,seepage13.Ifrequired,thefocus
controlcanbedisabledunderPTZ>Advanced>Controls.
Noisereduction-SettoOntoenablenoisereduction.Noisereductionmayincreasetheamountofmotionblur.
ImagefreezeonPTZ-SelectAllmovementstofreezetheimagewhilethecameraismovingduringapan,tiltorzoomoperation.
Oncethecamerareachesitsnewposition,theviewfromthatpositionisshown.Presetsfreezestheimageonlywhenthecamera
movesbetweenpresetpositions.
Overlay
Overlaysareusedtoprovideextrainformation,forexampleforforensicvideoanalysisorduringproductinstallationand
conguration.Overlaysaresuperimposedoverthevideostream.
Anoverlaytextcandisplaythecurrentdateandtime,oratextstring.Whenusingatextstring,modierscanbeusedtodisplay
informationsuchasthecurrentbitrateorthecurrentframerate.Forinformationaboutavailablemodiers,seeFileNaming&
Date/TimeFormatsintheonlinehelp
.
Itisalsopossibletodisplaytextwhenanactionruleistriggered,seeUseOverlayTextinanActionRule.
Toenableoverlays:
1.GotoVideo&Audio>VideoStreamandselecttheImagetab.
2.Toincludeanoverlayimage,selectIncludeoverlayimageatthecoordinates.Theoverlayimagemustrstbeuploadedto
theAxisproduct,seeOverlayImage.
3.Toincludedateandtime,selectIncludedateandIncludetime.
4.Toincludeatextstring,selectIncludetextandenterthetextintheeld.Modierscanbeused,seeFileNaming&
Date/TimeFormatsintheonlinehelp.
5.Denetextoverlaycharacteristicsintherelevantelds.
6.ClickSave.
Tomodifythedateandtimeformat,gotoSystemOptions>Date&Time.SeeDate&Timeonpage46.
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