Axis P3245 Series - Motion-adaptive exposure; Lock aperture; Aperture; Exposure level

AXISP3245NetworkCameraSeries
Thewebinterface
•Center:Usesaxedareainthecenteroftheimagetocalculatetheexposure.Theareahasaxedsizeand
positionintheliveview.
•Full
:Usestheentireliveviewtocalculatetheexposure.
•Upper
:Usesanareawithaxedsizeandpositionintheupperpartoftheimagetocalculatetheexposure.
•Lower
:Usesanareawithaxedsizeandpositioninthelowerpartoftheimagetocalculatetheexposure.
•Left
:Usesanareawithaxedsizeandpositionintheleftpartoftheimagetocalculatetheexposure.
•Right
:Usesanareawithaxedsizeandpositionintherightpartoftheimagetocalculatetheexposure.
•Spot:Usesanareawithaxedsizeandpositionintheliveviewtocalculatetheexposure.
•Custom:Usesanareaintheliveviewtocalculatetheexposure.Youcanadjustthesizeandpositionofthearea.
Maxshutter:Selecttheshutterspeedtoprovidethebestimage.Lowshutterspeeds(longerexposure)mightcausemotionblur
whenthereismovement,andatoohighshutterspeedmightaffecttheimagequality.Maxshutterworkswithmaxgainto
improvetheimage.
Maxgain:Selectthesuitablemaxgain.Ifyouincreasethemaxgain,itimprovesthevisiblelevelofdetailindarkimages,but
alsoincreasesthenoiselevel.Morenoisecanalsoresultinincreaseduseofbandwidthandstorage.Ifyousetthemaxgain
toahighvalue,imagescandifferalotifthelightconditionsareverydifferentfromdaytonight.Maxgainworkswithmax
shuttertoimprovetheimage.
Motion-adaptiveexposure
:Selecttoreducemotionblurinlow-lightconditions.
Blur-noisetrade-off:Usetheslidertoadjusttheprioritybetweenmotionblurandnoise.Ifyouwanttoprioritizelowbandwidth
andhavelessnoiseattheexpenseofdetailsinmovingobjects,movetheslidertowardsLownoise.Ifyouwanttoprioritizethe
preservationofdetailsinmovingobjectsattheexpenseofnoiseandbandwidth,movetheslidertowardsLowmotionblur.
Note
Youcanchangetheexposureeitherbyadjustingtheexposuretimeorbyadjustingthegain.Ifyouincreasetheexposure
time,itresultsinmoremotionblur,andifyouincreasethegain,itresultsinmorenoise.IfyouadjusttheBlur-noise
trade-offtowardsLownoise,theautomaticexposurewillprioritizelongerexposuretimesoverincreasinggain,andthe
oppositeifyouadjustthetrade-offtowardsLowmotionblur.Boththegainandexposuretimewilleventuallyreach
theirmaximumvaluesinlow-lightconditions,regardlessofthepriorityset.
Lockaperture
:TurnontokeeptheaperturesizesetbytheApertureslider.Turnofftoallowthecameratoautomatically
adjusttheaperturesize.Youcan,forexample,locktheapertureforsceneswithpermanentlightconditions.
Aperture:Usetheslidertoadjusttheaperturesize,thatis,howmuchlightpassesthroughthelens.Toallowmorelight
toenterthesensorandtherebyproduceabrighterimageinlow-lightconditions,movetheslidertowardsOpen.Anopenaperture
alsoreducesthedepthofeld,whichmeansthatobjectsclosetoorfarfromthecameracanappearunfocused.Toallowmoreof
theimagetobeinfocus,movetheslidertowardsClosed.
Exposurelevel:Usetheslidertoadjusttheimageexposure.
Defog
:Turnontodetecttheeffectsoffoggyweatherandautomaticallyremovethemforaclearerimage.
Note
WerecommendyounottoturnonDefoginsceneswithlowcontrast,largelightlevelvariations,orwhentheautofocusis
slightlyoff.Thiscanaffecttheimagequality,forexample,byincreasingthecontrast.Furthermore,toomuchlightcan
negativelyimpacttheimagequalitywhendefogisactive.
Optics
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