Standards and Color Management - NPES ·  · 2017-02-10Standards and Color Management. Standards...

StandardsandColorManagement

Standards Matter• GlobalLearning• GlobalAccess

StandardsWhichMatter1. Measurement2. Printing3. Fileformats

Measurement• ISO3664• CIEL*a*b*&delta-E• ISO13655

Lightness,Hue,Action!

• L*a*b*isequivalenttoL*C*h*• Huedifferencegenerallyeasiertodetectthanchroma orlightnessshift.

GrayMatters• Humansaremostsusceptibletosmallchangesinneutralcolors,lessabletodetectchangesinsaturatedcolors.• Grayisinthemiddleofthecolorspace.• Near-neutralsformalargeproportionofwhatweseeingraphicarts.

Soft Proofing• ISO3664• ISO14861• ISO12642

Metc: ISO13655

•M0:legacy•M1:definedUV:D50•M2:UV-excluded•M3:polarized

Printing• ISO12647 series• CGATSTR015– G7• ISO10128• ISO/PAS15339

ISO12647-2• ISO2846 inks• Prescribedpapers• Targetdotgaincurves

• Prescribedprintingtolerances• Targetsoffsetlithography• Other partstargetingotherprintingprocesses

PrescribedInkColours

PrescribedDotGains

Prescribed Papers

WhatisG7?

G7Method• CGATSTR015• Useof1-dcurvestoensureG7aimsareachieved:• Definitionofcolorfor3-coloroverprints.• Defineda*,b*(C*,h*)fromwhite(substrate)todarkpoint.• Definedlightnessfromwhitetodark,basedonNPD(neutralprintdensity).• Similarcurveshapesforallsubstrates,printingprocesses.

ISO/PAS15339

• 7CRPCs:• CRPC-1 - Newsprint• CRPC-2 - ImprovedNewsprint• CRPC-3 - UniversalPremiumUncoated• CRPC-4 - UniversalSupercalendared• CRPC-5 - UniversalPublicationCoated,SWOP2013• CRPC-6 - UniversalPremiumCoated,GRACoL 2013• CRPC-7 - Universal

• Syntheticdatasetsbasedonreal-worldconditions.• Graybalance-alignedforsharedvisualappearance.

ISO/PAS15339-2:2015SharedHueAngles

SharedCommonAppearance:ISO/PAS15339

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File Formats• ISO17972:CxF• ICC

• ISO15076: v4• ISO20677:iccMAX

• ISO15930: PDF/X• ISO20616:PQX

FileFormat Relevance

ThankYou!