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Photoshop, use mode define color to the Lab Photoshop, lightness, stands for in Lab ‘L’ The colors. your usesand Photoshop the CIE definitionof The CIE lightness this value. calculate to the account Lightness into does take not value effect. Helmholtz-Kohlrausch is not a small It us as lightingis to users. summer 2012 cameras. T you video are atthesamestage with looking on itsown. It even gets more confusing if hardly any looks thanthered brighter did on stage but, to oureyes, themixed white same problem. 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T colors,secondary red, green, blue, cyan, and saturatedcolorfully inthesixprimary computer monitors. T coloredcolumns patches of in asused Protocol Please take attheonline alook version of you on a monitor must view to properly. see indeed, really all are. they as brighter look dimmer andthewhite will effect—thus, on camera, look thecolors will F I have one final example for you,which or example, inthetop row, thered patch Figure 5– ComputermonitorHKeffect to view it. to view Figure shows 5 three summer 2012 hus we see a patch of 162 hus 162 we apatch see of 22 he left patch isa he centre column as aresearch thesis? LEDs. P circumstances, gelsandwith with both values forwhat we HKeffect inthose get deeply saturatedcolorsa stage with to see is! than it actually brighter us, itas tells perceive than our also meter we more thatblue see light of only theeye does more to that. Not addseven The HKeffect its 2%transmissionfigure wouldsuggest. than why Congo brighter much Blueappears isonereason cansee, we which blue light theamountdeep underestimates of curve how thestandarddiscussed CIEphotopic lowest—so, isinourfavor! everything to HKeffect greens whichhighest have the reds, pinks, andblues, which produce the reallythan they are. We alsoprefer deep those deep saturatedcolors brighter look intheviewer’sHK effect eyes, which makes probably the away get of thatbecause with that are often dim. rather actually We commonly usesaturatedcolors on stage isclear.entertainment lighting We red andmagenta.and thelargest with the leastdifference green andyellow, with [email protected]. Board. Mike canbereachedat and Treasurer ofPLASANorth American Regional the currentchairofPLASAGoverningBody the entertainmenttechnologyindustry, Mike is and intellectualproperty. A 30-yearveteran of design, technologystrategy, R&D, standards, within theentertainmentindustryonproduct which providesconsultingsupporttocompanies Mike Wood runsMike Wood ConsultingLLC, and Mark D. Fairchild (RITMunsell Lab) Computer Kohlrausch at Work on theDesktop Common Computer Monitor: Helmholtz- P erceptual Color for a Amplification of same luminance . . . the of to light usthanwhite brighter . . .colored appears light “ I’d love to someon see experimentation Note: P In previous T Reference: Figure from: 5datataken T he relevance of the HK effect to theHKeffect he relevance of erhaps someoneerhaps could take thison . J. Michael(Xerox Sanchez Corp.) n rotocol I’ve articles

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