lighting for video...color temperature - a standard of measuring the characteristics of light,...
TRANSCRIPT
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LIGHTINGFORVIDEO
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LIGHTINGTERMINOLOGY
AmbientLight-Thelightalreadypresentinascene,beforeanyadditionallightisadded.Canbehelpfulorproblematicdependingonwhatyouwanttoachieve.• Colortemp,intensity&directionofambientlightingshouldmatchyourset-up,ifit’saproblem,possible
solutionistoblockoutambientlightanduseonlyartificial.– Ex:sunlight,lightenteringroomfromwindows,overheadlighting
IncidentLight-Lightseendirectlyfromit’ssource.
– Ex:sunlight,lampsReflectedLight-Lightseenafterhavingbouncedoffasurface.
– Ex:lightfromreflectors,walls,mirrors
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ColorTemperature-astandardofmeasuringthecharacteristicsoflight,measuredinkelvins(K)ForVideo:relevanttempsare2000K–8000K,mostcommonlightingconditions
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ContrastRatio-ameasurementofthedifferencebetweenthewhitestwhiteanddarkestblackwithinanimage.Ahighercontrastratio=largerdifferenceinbrightness.Aratioof300:1meansthebrightestpointinimageis300Xasbrightasthedarkestpoint.
Videosuckscomparedtoyoureyes…haveyoueverpulledoutyourphone/cameratorecordsomethingandthelightingisawfulonyourcamerabutyoucanseeitperfectly?
Generallyhasarelativelylowcontrastratio.Possiblesolutions:Avoidsuperbright/darkcontrastsinyourshot.Addlightingtodarkareas/filterbrightareas.
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LIGHTINGTERMINOLOGY(3-pointlighting)
KeyLight-Mainlightonsubject,providesmostilluminationandcontrastFillLight-Lightplacedtosideofsubject,filloutshadowsandbalancekeylightBackLight-Lightplacedattherearofsubject,lightsfrombehind
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HardLight–“hardandunforgiving”Lightdirectlyfromthesource;castsstrong,well-definedshadows– HardLightexample:noon-daysunishardestlightinnature
SoftLight– Produceslessorsoftershadows,appearstowraparoundsubject.AKA“beautylighting”
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HardLighting SoftLighting
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Spot– controlled,narrowlyfocusedbeamoflightFlood–broadbeamoflight,lessdirectionalandintenseasspotFresnel– specialtypeoflens,lightcanbespreadoutorconcentrated
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CONTINUOUSLIGHTING(FORVIDEO)
Flourescent
HMI(HydragyrumMedium-arcIodide)
LED
Tungsten
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Tungsten(withFresnelLens)
• Tungstenisatypicallightbulb,alsocalledincandescentlight
• Produceshighestvolumesoflight(alsoproducesmostheat)
• Balancedfor3200– 3400K(warmerthandaylight)
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HMI(withFresnelLens)Lightofchoiceformovie/TVproductionsLargeoutputofdaylightbalancedlight(5600K)SuperexpensiveProneto“non-passivefailure”ifnotusedasdirected(AKAExploding)Thisparticularlightis~13,000$
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FlourescentAffordable!AvailabledaylightbalancedRuncool,won’tjackupyourutilitiesbillLowerlightoutput,usemore
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LEDAvailabledaylightbalancedQualityvaries,soresearchbeforepurchase.Runcool,lastalongtimeCompact,easyportability
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DIY/OtherLights
HalogenworklampsPROS:getthemathardwarestores,goodforusingaskeyfloodlightinlargerareas.CONS:notmadeforvideo/photolighting,you’llneedtousegelsordiffuserstoachievelightyouwant.
ChineselanternSoftlighting,cheap
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BarnDoor
Gels,Diffusers
Snoot
Reflectors UmbrellaReflector/Diffuser
C47(clothespin)
Blackwrap&Flag
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