Axis Q1765-LE - Page 20

AXISQ1765-LENetworkCamera
VideoandAudio
Whitebalanceisusedtomakecolorsintheimageappearthesameregardlessofthecolortemperatureofthelightsource.TheAxis
productcanbesettoautomaticallyidentifythelightsourceandcompensateforitscolor.Alternatively,selectthetypeoflight
sourcefromthedrop-downlist.Foradescriptionofeachavailablesetting,seetheonlinehelp
.
ThewhitebalancewindowisenabledfortheAutomaticandAutomaticoutdooroptionsthatappearintheWhitebalancedrop-down
list.Selectoneoftheoptionsfromthedrop-downlisttosetthewhitebalancewindowproperties.SelectAutomatictousethe
defaultsettingsfortheAutomaticandAutomaticoutdooroptions(intheWhitebalancedrop-downlist).SelectCustomtomanually
setareferencewindowforwhitebalanceintheviewarea.
WideDynamicRange
Widedynamicrange(DynamicContrast)canimprovetheexposurewhenthereisaconsiderablecontrastbetweenlightanddark
areasintheimage.EnableWDRinintensebacklightconditions.DisableWDRinlowlightconditionsforoptimalexposure.
Note
Thissettingisonlypossiblewhenusingautomaticexposurecontrol.
ExposureSettings
Exposurevalue-UsetheExposurevalueslidertoadjusttheoverallbrightnessoftheimage.
Exposurecontrol-Exposureistheamountoflightthecamera’ssensorcapturesforascene.Toomuchlightresultsinawashedout
photoandtoolittlelightresultsinadarkscene.Selectasuitableoptiontocontrolexposure.
TheFlicker-free50or60Hzoptionremovesickerthatiscausedbyuorescentandotherlightsources.TheHoldcurrentoption
locksthecurrentexposuresettings.
Maxexposuretime-Shutterspeed,alsocalled‘exposuretime’standsforthelengthoftimethecamerashutterisopen,thereby
exposingthecamerasensortolight.Ifshutterspeedisfastitcanfreezeactioneffectively.Ifshutterspeedisslow,itcancause
movingobjectstoappearblurred.Decreasingtheexposuretimewillreducemotionblur.
EnableBacklightcompensation-Enablethisoptionifabrightspotoflightsuchasalightbulb,causesotherareasintheimage
toappeartoodark.
Exposurezones-Thissettingdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.
YoucanselectapredenedareabydeningIncludeandExcludewindowswithintheimage.Excludewindowsexcludeareasthatare
toobrightordark,andIncludewindowsincludeareasinthescenethathavebetterlightingwhichwillcontributetotheexposuredata.
TheremustbeatleastoneIncludewindow.TherecanbeatotaloftenIncludeandExcludewindowstotailortheexposurezone.
NotethatanExcludewindowiseffectiveonlywhenplacedinsideanincludewindow.
Tip:IfanareaisextremelybrightdrawanIncludewindowtocoverthewholeareaanddeneExcludewindowswithinitto
blockoutthebrightareas.
Shutter&Gain
Theshutterandgainsettingsaffecttheamountofmotionblurandnoiseintheimage.Toadapttodifferentlighting,available
storagespaceandbandwidth,itisoftennecessarytoprioritizeeitherlowmotionblurorlownoise.TheAxisproductallows
usingdifferentprioritizationinnormallightandinlowlight.
Shutterspeedisrelatedtotheamountoftimetheshutterisopenedandismeasuredinseconds(s).Aslowshutterspeedallows
morelighttoreachthesensorandcanhelpproduceabrighterimageinlowlightsituations.Ontheotherhand,aslowshutter
speedcancausemovingobjectstoappearblurry.
SetShutterto
•Autotosettheshutterspeedautomatically.Ifrequired,useMaxshuttertolimittheshutterspeedtopreventtheframe
ratefrombeingreduced.
Forexample,toget30fps,setMaxshutterto1/30.
•Fixedtouseaxedshutterspeed.
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