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Colour Webinar Series3 Key Steps to Getting the Right Color
Lou PrestiaSr. Product Line Manager, Fiery Division
Yael CaspiChannel Marketing Manager, Fiery
Agenda
• Why does colour management matter?
• Colour Basics 101
• The 3 Key Steps to Getting the ColourYou Want
1. Application vs. DFE (RIP) colour settings
2. Calibration
3. Profiling
Why Is It Important to Understand and Manage Colour?
• Customer retention
–Educate the customer
–Understand limitations
• Save time
• Save money
Colour Basics 101
RGB Colour– Device Dependent
Why Can’t I Print with RGB?
• The problem with RGB colour model is that for print, the colours must be opaque
PaperRedBlue
CMY(K) Colour – Device Dependent
Printing Colours with CMYK
• CMY are transparent colourants that act as filters, selectively blocking RGB, respectively
PaperMagenta
Cyan
Device Dependent Issues
CIE L*a*b* – Device Independent
Measuring Device Independent Colour
Spectrophotometer
Definition of Colour Gamut
• The total reproducible range of colours on a device
– Almost right!
• The total reproducible range of colours on a device expressed in device independent colour space
Definition of Colour Management
• Gamut mapping with the intent of preserving object appearance
• What is an ICC profile?
– A look up table (LUT) that defines the mapping of device dependent to device independent colour space for a given device
OutputProfile.icc
Colour Gamuts
RGB
OffsetPressCMYK
Visual Spectrum
DigitalPressCMYK
ICC colour processing workflow
CMYK Input
RGB Input
CMYKOutput Profile
Profile Connection Space
Colour Management for Spot Colours
John’s
PurpleNancy’s
Orange
PANTONE
Emerald
17-5641
Spot Colours at the DFE Server
Spot Colour
DFE Look Up Tables
HKS
Toyo
DIC
PANTONE L: 44.08a: 67.69 b: 37.09
Fiery Output Profile
Printed OutputC: 4%
M: 97.5%Y: 73.5%K: 0%
Additional Resources
ABCs of Color Guide
http://www.efi.com/marketing/fiery-servers-and-software/downloads/abc-guides/
3 Key Steps to Getting the Colour Right
3 Key Steps
1. Application vs. DFE (RIP) colour settings
2. Calibration
3. Profiling
Application vs. DFE (RIP) Colour Settings
Anatomy of a Document
• Designed for Press
• Designed for Digital Printer
Match Settings
Make sure the print server matches Design software application settings
Application’s Settings
DFESettings
Additional Information
Color Settings Whitepaper
Adobe Creative Suite Printing Guide
Calibration
Calibration
• Maintains consistent tone reproduction
• Provides consistency from day to day
• Compensates for environmental fluctuations
• Keeps colour in a known and repeatable state
What Does Calibration Do?
10 90 100200 8030 40 50 60 70
Calibration Summary
• Establishes even gradation across the tonal scale
• Examples
– 75% patch: lose detail in shadows
– 7-10% patch: lose details in highlights
Calibration Example
Before After
What Else Affects Calibration?
• Media type
• Press technology and speed
• Print settings
• Environmental variables
When To Calibrate?
• After the engine is warmed up • Before a large job• Media changes
Spectrophotometers
• EFI ES-6000
– Network-connected scanning spectrophotometer
– Eliminates manual scanning of color targets
– Can be shared by multiple network users
• EFI ES-2000
– Handheld spectrophotometer
– Accurate spot color measurements
Calibration Demo
Where Are We Now ?
Ca
lib
rate
dConsistent, but not
Accurate ColourU
n-C
ali
bra
ted
Neither consistent nor Accurate Colour
Profiling
Colour Profiles (Output)
• Defines gamut of print system
• DFEs include factory default profiles
• Best practice: create custom profiles
Output Profile Creation
• Need two sets of values1. Device values (CMYK)
2. Device independent values (L*a*b*) from spectrophotometer
Output Profile Creation
• Use profiling software to create ICC output profile from measurements
Profiling Demo
Selecting the Output Profile
• Select Output Profile
Where Are We Now ?
What We’ve Learned
• Why does colour management matter?
• Colour Basics 101
• The 3 Key Steps
1. Application vs DFE (RIP) colour settings
2. Calibration
3. Profiling
eLearning Bundle
• Free 3-course bundle for all registrants1. Optimizing Color and Consistency with your Fiery Server
2. Spot Color Accuracy with your Fiery Server
3. Introduction to Fiery Color Profiler Suite
• How does it work? Look for email with details
Must sign up and begin courses by September 30, 2016
• Go to https://training.efi.com/#/signup
• User name:
• Password:
Color Webinar Series
1. Today
3 Key Steps to Getting the Right Colour
2. July 29
The ABCs of Producing the Best Match for Spot Colours
Fiery Resources
• resources.efi.com/fiery
– Quick online assistance
– Software downloads
– Training resources
– More...
Thank You!