Axis M2025-LE - Night mode and IR illumination; Noise reduction and backlight handling

AXISM2025-LENetworkCamera
Setup
•Formostusecases,selectAutomaticexposure.
•Forenvironmentswithcertainarticiallighting,forexampleuorescentlighting,selectFlicker-free.
Selectthesamefrequencyasthepowerlinefrequency.
•Forenvironmentswithcertainarticiallightandbrightlight,forexampleoutdoorswithuorescentlightingatnightand
sunduringdaytime,selectFlicker-reduced.
Selectthesamefrequencyasthepowerlinefrequency.
•Tolockthecurrentexposuresettings,selectHoldcurrent.
BenetfromIRlightinlow-lightconditionsusingnightmode
Yourcamerausesvisiblelighttodelivercolorimagesduringtheday.Astheavailablelightdiminishes,youcansetthecamerato
automaticallyshifttonightmode,inwhichthecamerausesbothvisiblelightandnear-infraredlighttodeliverblack-and-white
images.Sincethecamerausesmoreoftheavailablelightitcandeliverbrighter,moredetailed,images.
1.GotoSettings>Image>Dayandnight,andmakesurethattheIRcutlterissettoAuto.
2.Todetermineatwhatlightlevelyouwantthecameratoshifttonightmode,movetheThresholdslidertowardBright
orDark.
3.EnableAllowIRilluminationandSynchronizeIRilluminationtousethecamera’sIRlightwhennightmodeisactivated.
Note
Ifyousettheshifttooccurwhenit’sbrighter,theimageremainssharperastherewillbelesslow-lightnoise.Ifyouset
theshifttooccurwhenit’sdarker,theimagecolorsaremaintainedforlonger,buttherewillbemoreimageblurdue
tolow-lightnoise.
Reducenoiseinlow-lightconditions
Toreducenoiseinlow-lightconditions,youcanadjustoneormoreofthefollowingsettings:
•Makesurethattheexposuremodeisautomatic.
Note
Increasingthemaxshuttervaluecanresultinmotionblur.
•Theshutterspeedshouldbeasslowaspossible,whichmeansyoushouldsetmaxshuttertothehighestpossiblevalue.
•Reducesharpnessintheimage.
Handlesceneswithstrongbacklight
Dynamicrangeisthedifferenceinlightlevelsinanimage.Insomecasesthedifferencebetweenthedarkestandthebrightest
areascanbesignicant.Theresultisoftenanimagewhereeitherthedarkorthebrightareasarevisible.Widedynamicrange
(WDR)makesbothdarkandbrightareasoftheimagevisible.
1.GotoSettings>Image.
2.Ifrequired,turnonWDRunderWidedynamicrange.
3.UsetheLocalcontrastslidertoadjusttheamountofWDR.
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