Black&WhiteConversion

Introduc)ontoPhotoshop

Lectureoutline

•  Blackandwhiteconversion•  Duo/Tri/Quadtones

•  Note:theserecipesarefromTheAdobePhotoshopCS5BookforPhotographersbyScoFKelby

Black&WhiteConversion

Black&WhiteConversion

•  ExcludingACRandthirdpartyplug-ins,thereare8waystoconvertanimagefromcolortoblack&whiteinPhotoshop

•  Ofthethirdpartyplug-ins,NikSilverEffectsProisconsideredtobethestandardinconver)ngcolortoblackandwhite– TopazLabsalsomakesablackandwhiteplug-in,asdoesOnOnesoSware.

Black&WhiteConversion

•  DONOTDOin-cameramonochromeconversion–onlyusesredchannel,throwsaway2/3ofyourdata(blueandgreenchannels)

•  Trueblack&whiteisaninterpreta)ononhowallthreechannels(red,green,blue)interactwitheachother

Black&WhiteConversion

•  Destruc)ve–  Converttograyscale–  Gradientmap–  Desatura)on

•  Non-Destruc)ve–  CopyLightnesschannel*–  Gradientmapadj.layer–  Hue/Satura)onadj.layer–  Channelmixeradj.layer–  Black&whiteadj.layer

Black&WhiteConversion

•  Destruc)ve–  Grayscaleconversion– Menu:

•  Image→Mode→Grayscale

–  Throwsawayallcolordata

– MaygiveyouanOKblack&whiteimage,mostofthe)methoughitresultsinaflat(lowcontrast)image

Black&WhiteConversion

•  Destruc)ve–  Gradientmap– Menu:

•  Image→Adjustments→Gradientmap

•  Selectblacktowhitegradient

– Mapsblacktoshadows,whitetohighlights

–  Doesafairlygoodquickblack&whiteconversion,butisdestruc)ve

Black&WhiteConversion

•  Destruc)ve–  Desaturate– Menu:

•  Image→Adjustments→Desaturate

•  [shiS]+[cmnd/ctrl]+u

–  Removescolors–  Destruc)ve,slightlyflat(lowcontrast)image

Black&WhiteConversion

•  Non-destruc)ve*–  Lightnesschannel(Lab)– Menu:

•  Image→Mode→Labcolor

•  CopyLightnesschannel–  Throwsawayallcolordata

–  GivesabeFerblack&whitethangrayscale(notasflat),s)llthrowingawaycolordata

Black&WhiteConversion

•  Non-destruc)ve–  Gradientmapadj.layer– Menu:

•  Layer→NewAdjustmentLayer→GradientMap

•  Selectblack&whitegradient

–  Adjustmentlayer:non-destruc)ve,haslayermask

–  Iden)caltoGradientMap

Black&WhiteConversion

•  Non-destruc)ve–  Hue/Satura)onadj.layer– Menu:

•  Layer→NewAdjustmentLayer→Hue/Satura)on

•  Takesatura)onsliderto-100

–  Adjustmentlayer:non-destruc)ve,haslayermask

–  Abletoadjustindividualchannelsforsatura)on&lightness

Black&WhiteConversion

•  Non-destruc)ve–  Channelmixeradj.layer– Menu:

•  Layer→NewAdjustmentLayer→ChannelMixer

–  Adjustmentlayer:non-destruc)ve,haslayermask

–  Abletoadjustred,greenbluechannelsforamountineach(sum≠100)

–  ClickMonochrometogetblack&white

Black&WhiteConversion

•  Non-destruc)ve–  Black&whiteadj.layer– Menu:

•  Layer→NewAdjustmentLayer→Black&White

–  Adjustmentlayer:non-destruc)ve,haslayermask

–  Abletoadjust6channels(red,blue,green,yellow,cyan,magenta)from-200to+300

Duo/Tri/Quadtones

•  Richerblackandwhitesareavailablebydoingduo/tri/quadtoneimages

•  Convertimagetoblack&whiteusingtheGradientmapmethod

•  ConverttoGrayscale(havetogotograyscaletogettoduotones)– Menu:Image→Mode→Grayscale– FlaFenanylayers,discardcolorinfo

Duo/Tri/Quadtones

•  ConverttoDuotones– Menu:Image→Mode→Duotone

•  Defaultstomonochrome(Black)•  Fromdrop-downmenupickcombina)ons:– Bl5415145773(Quadtone)– 478Brown(100%)bl4(Duotone)– BlWmGray7WmGray2(Tritone)– WmGray11bl2(Duotone)

Duo/Tri/Quadtones

•  Whatyougetreallydependsupontheimage;differentimageswilllookdifferentwiththesamemix.Experiment.

•  Whendone,changebacktoRGBcolor– Menu:Image→Mode→RGBColor