Axis M20 Series - Page 19

AXISM20BulletCameraSeries
Thedeviceinterface
Exposuremode:Selectanexposuremodetoreducerapidlychangingirregulareffectsintheimage,forexampleickerproduced
bydifferenttypesoflightsources.Werecommendyoutousetheautomaticexposuremode,orthesamefrequencyasyour
powernetwork.
•Automatic:Thecameraadjuststheaperture,gainandshutterautomatically.
•Automaticaperture
:Thecameraadjuststheapertureandgainautomatically.Theshutterisxed.
•Automaticshutter
:Thecameraadjuststheshutterandgainautomatically.Theapertureisxed.
•Holdcurrent:Locksthecurrentexposuresettings.
•Flicker-free
:Thecameraadjuststheapertureandgainautomatically,andusesonlythefollowingshutter
speeds:1/50s(50Hz)and1/60s(60Hz).
•Flicker-free50Hz
:Thecameraadjuststheapertureandgainautomatically,andusestheshutterspeed1/50s.
•Flicker-free60Hz
:Thecameraadjuststheapertureandgainautomatically,andusestheshutterspeed1/60s.
•Flicker-reduced
:Thisisthesameasicker-free,butthecameramightuseshutterspeedsfasterthan
1/100s(50Hz)and1/120s(60Hz)forbrighterscenes.
•Flicker-reduced50Hz
:Thisisthesameasicker-free,butthecameramightuseshutterspeedsfaster
than1/100sforbrighterscenes.
•Flicker-reduced60Hz
:Thisisthesameasicker-free,butthecameramightuseshutterspeedsfaster
than1/120sforbrighterscenes.
•Manual
:Theaperture,gainandshutterarexed.
Exposurezone:Theexposurezonetellsthecameratoprioritizeimagequalityinthemostimportantpartofthescene.Selectthe
partofthesceneofgreatestinteresttocalculatetheautomaticexposurelevels,forexampletheareainfrontofanentrancedoor.
Note
Theexposurezonesarerelatedtotheoriginalimage(un-rotated),andthenamesofthezonesapplytotheoriginalimage.
Thismeans,forexample,thatifthevideostreamisrotated90°,thentheUpperzonebecomestheRightzoneinthe
stream,andLeftbecomesLower.
•Automatic:Suitableformostsituations.
•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.
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