standards and color management - npes · · 2017-02-10standards and color management. standards...
TRANSCRIPT
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!