Basic Color Control(level进行精确的校色).doc

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1、ColorGradinginAfterEffects:BasicColorControlArticlefocus:ThisseriesisdiscussingacoupleofapproachestowardscolorgradingusingAfterEffects5.5.BarendOnneweerstartsoutwitharathermathematicalapproachtomatchtheoveralcolorbalancebetweenshots.Thisprocedurecanalsobeputtogoodus

2、etocorrectbadlywhite-balancedvideo.Whatis'ColorGrading'?Averyimportantstageinfinishingaprojectonfilmorvideoiscolorgradingorcolorcorrection(bothtermsareusedforthesameprocess).Therearebasicallytwoaspectstothecoloristsjob.Hewillprovideasenseofcolorcontinuitythroughouta

3、scenebyindividuallyadjustingthecolorsandluminancetomatchthedifferentshots.And,oftenworkingwiththecinematographer,hecancreateanoveralllookandvisualatmosphereforthefilmbyadjustingthecolorpaletteandcontrast.Apartfromthisit'salsooftenthecoloristthatcontrolsthefinalimage

4、sharpnessandgrain.Intheolddaysoffilm(...)thecoloristwasalsocalledtimer,andheusedred,greenandbluelightstoadjustthecolorsandluminanceofafilmtransfer.Apartfromthelightsthelookoftheimagescouldalsobeaffectedbychemicalprocesseslike'skipbleach'or'bleachbypass',tosuppressce

5、rtaincolors,orincreasethecontrast.Nowadays,evenmaterialthatwasshotonfilmisoftentransferredtoadigitalformattoallowfordigitalcolorgrading,whichallowsformuchmoreinteractivitybetweentheimageandthecolorist,andthepossibilitiesarenearendless,aslongastheimagequalityallows.T

6、hisarticlewillfocusonthetoolsandpossibilitiesfordigitalcolorgradingusingAdobeAfterEffects.Iwilltrytoshowsomedifferentapproachestowardsusingthesetools,foradryexplanationofthedifferenttools,usetheon-linehelpfilesorthemanual.GeneralTipsItiscommonproceduretostartyourwor

7、konawidemastershotofagivenscenetodevelopthelookandpaletteforthescene.Fromthereonalltheothershotswillbeprocessedtomatchthislook.Incasethereareverydifficultshotsordramaticallyunder-exposedshotsyouneedtoworkon,itmaybenecessarytostartworkingonthoseshotsfirst,toestablish

8、thebestresultpossible,andthenpossiblydegradetheothermaterialtomatchthelookofthoseworstshots.TheSceneForthisexampleI'lluseascenethatisnotto