profiling & optimization in fiery proserver and fiery xf · session overview • today we will...
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Profiling & Optimization inFiery proServer and Fiery XF
Kerry Moloney Product Marketing Manager – Fiery Wide Format
John NateEducational Architect and Trainer – Fiery Wide Format
Wide Format Series
Session overview
• Today we will go through the steps and best practices to create and optimize ICC color profiles– Not using a suitable color profile will compromise color accuracy
– Custom ICC profiles are the best way to achieve color accuracy
– Profile creation is the step after linearization
– Optimization can be performed after profile creation to attain the very closest match
• Take a poll...
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After this webinar, you will be able to…
• understand how custom ICC profiles can enhance your color capabilities.
• create custom ICC Profiles specifically for your system.
• appropriately configure the black generation settings.
• optimize color output.
• understand how often to profile and optimize.
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The color tools
What do you have available?
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The EFI solution
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• EFI Color Profiler Option
– Optional (included with many proServers)
• Create ICC Profiles
• Evaluate ICC Profiles
• Edit ICC Profiles
Fiery XF Color Options
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Basic Color Tools set
Fiery XF Color Options
7Color Profiler Option adds…
Basic Color Tools set
Why create custom ICC Profiles?
Why is it important?
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Profiling
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• Profiling is passive
ICC ProfileInternational Color Consortium
Profiling
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• Profiling is passive• A snapshot of the device characteristics
Color management is…
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…like making toast…
Courtesy of Steve Upton - Chromix
Color management is…
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…like making toast…
Courtesy of Steve Upton - Chromix
Color management is…
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…like making toast…1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
Courtesy of Steve Upton - Chromix
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Profiling
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My Printer
=ISO/Fogra/Idealliance
Profiling
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CMYK = 1/84/95/2 0/100/66/0 0/97/90/8
L*a*b* = 61/127/105
CMYK = 0/100/66/0
L*a*b* = 61/127/105
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Profiling & Optimization
Questions?Please use the Q & A Window
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Profiling & Optimization
Poll results…
Building custom ICC Profiles
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Create Media Profile (after finishing .epl)
• Select measurement device
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Create Media Profile (after finishing .epl)
• Select measurement device• Select patch layout
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Create Media Profile (after finishing .epl)
• Select measurement device• Select patch layout• Select media size
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Target Patch Selection
• 1617 – Most common selection for proofing
• 928 – Most common selection for production printing
• 234 – Useful for production printing
• 46 – Useful for .epl “quick check”
• 4028 – You have far too much free time
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Create Media Profile
• Measure printed target
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Create Media Profile
• Select default profile settings
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Create Media Profile
• Modify black generation settings
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Traditional black controls
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Traditional Black Controls
• Leave at defaults
– Used for toner based output devices
– Black generation
– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Traditional Black Controls
• Affect ink usage– Black start – Black generation– Black width
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Create Media Profile
• Maximum GCR• Optimize colorimetric precision• Viewing condition
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Create Media Profile
• Save profile• Automatically linked
to .epl file• Automatically moved to
correct folder
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New black controls (6.3)
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New Black Controls
• New Black Generation ICC profile options
– EFI VUTEk
– EFI Matan
– EFI Reggiani
– Epson SureColor P7000 & P9000
– Mimaki TS300P-1800
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• Black settings
New Black Controls
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Defaults will be selected automatically for printers that support advanced black generation.
• Edit Black Controls
New Black Controls
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You can accept these settings or click on the Edit Black Controls button to modify them.
Black controls
• Maximum black inkThe maximum black adjustment sets the maximum amount of black ink used at the black point.
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Black controls
• Black start
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Sets where black ink can be used when printing images. For printers utilizing light black ink or for images viewed from a greater distance, black start can be set lower. For printers that only use normal black ink, black start can be set higher.
Black controls
• Black generationControls the rate at which color inks are
exchanged for black ink in an effort to reduce
ink usage, make grays more stable, etc.
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Black controls
• Black widthHow far in color space from the gray axis back generation is applied.
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Advanced black controls
• Ink amounts at blackThe ink-amount-at-black control sets thetargeted ink amounts for the cyan, magentaand yellow inks at the black point of theprofile.
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Advanced black controls
• Black usage at gamut surfaceTypically setting the control to “1” will
produce the maximum color gamut in a
region but will introduce black ink at
higher lightness colors.
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Gamut mapping options – Perceptual only
• ChromaIncreases the chroma/saturation
Normal => Chroma boost C*0Colorful => Chroma boost C*10Vivid => Chroma boost C*20
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Gamut mapping options – Perceptual only
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-b*
Blue
b*
Yellow
a*
Red
-a*
Green
L* = 100
White
L* = 0
Black
Gray
Gamut mapping options – Perceptual only
• LightnessThe lightness-adjustment control, globally,the lightness of the printed colors.
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Gamut mapping options – Perceptual only
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-b*
Blue
b*
Yellow
a*
Red
-a*
Green
L* = 100
White
L* = 0
Black
Gray
Gamut mapping options – Perceptual only
• ContrastThe contrast-adjustment controls, globally, the contrast of the printed colors.
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Gamut mapping options – Perceptual only
• Shadow lightnessThe shadow-lightness-adjustment increasethe lightness in dark colored regions for more details.Normal => Lightness boost L*0Slight => Lightness boost L*2 Medium => Lightness boost L*4High => Lightness boost L*6
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Gamut mapping options – Perceptual only
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-b*
Blue
b*
Yellow
a*
Red
-a*
Green
L* = 100
White
L* = 0
Black
Gray
Processing
• Input data smoothingControls the amount of smoothing of themeasurement data.
0 = Most accurate but subject to noise
1 = Less accurate and least subject to noise
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Processing
• Table smoothingThe table-smoothing-adjustment controlsthe amount of smoothing of the “output” side of the ICC Profile. (L*a*b* > CMYK)
Lower values = higher single color accuracy
Higher values = potentially smoothergradients
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Processing
• Table sizesThe table-size-adjustment determine thenumber of table entries in the input and output color tables.
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Color optimization
Why?
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Color Optimization – Why?
Because our devices, & math are not perfect!
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17.01 26.96 63.09
L*a*b* values:
29.97787 45.69771 58.70145 68.45807
75.47417 80.33875 82.87785 82.66117
80.63782 78.22690 74.66239 69.04402
61.22529 50.22964 37.83932 25.58632
15.00877 8.67933 5.23079 3.45464
2.77104 2.27359 2.13321 2.30716
2.82902 3.89715 5.02022 5.52377
5.52377 4.99886 3.99786
Spectral values:
Color Optimization
How does it work?
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Color Optimization
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Color Optimization
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Fogra 51
57/43/-7 59/43/-10
≠
Color Optimization
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Fogra 51
57/43/-7 57/43/-7
57/43/-7 55/43/-4-2/0/3+ =
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Color Optimization
How it’s done…
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Color Optimization
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Basic Color Tools
Color Profiler Option
Color Optimization
• Launch “Optimize Profile option from Color Tools• Select Workflow you wish to optimize• Dot Creator• One Bit• Layout Option
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Color Optimization
• Select measurement device• Dot Creator• One Bit• Layout Option
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Color Optimization
• Select optimization chart to print and measure• Dot Creator• One Bit• Layout Option
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Color Optimization
• Select optimization method• Dot Creator• One Bit• Layout Option
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Color Optimization
• Select paper white settings• Absolute colorimetric is the default• Click “Next”• Dot Creator• One Bit• Layout Option
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Color Optimization
• Print and measure targets
• Delta-E values are displayed
• Click “Optimize”, re-print, re-measure
• When Acceptable Delta-E values are obtained, click “Finish”
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Ideal values
• Average Delta-E < 1.0• Peak Delta-E < 5.0• Paper white Delta-E < 1.0• Target in Gamut (%) >98 for proofing• Target in Gamut (%) media dependent for
production
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Profiling and Optimization
• How often?
– Profiling
• New media type
• New ink type
• “New and Improved!”
– Optimization
• Visual change
• Monitor verification values72
Profiling and Optimization
• How often?
– Profiling
• New media type
• New ink type
– Optimization• Visual change
• Monitor verification values
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Profiling and Optimization
• How often?
– Profiling
• New media type
• New ink type
– Optimization• Visual change
• Monitor verification values
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Profiling and Optimization
• How often?
– Profiling
• New media type
• New ink type
– Optimization• Visual change
• Monitor verification values
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Session summary
• We learned…
– Which target to use for profiling and optimization and why
– The impact of black control setting
– How often to re-optimize, and when to re-profile
• Learn more…
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Session resources
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• X-Rite’s Complete Guide to Color Management
• We have two linearization and profiling guides– Non-EFI Printers
– EFI Printers
• Both available on help.efi.com
Recorded World of Fiery sessions
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• Don’t forget the existing Wide Format sessions from 2015 and 2016 – view here
Additional World of Fiery sessions
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• November 30 – Profiling and Optimization in Fiery proServer and Fiery XF
• Color Process Control and Verification EFI webinars
calendar
• Have your say on the World of Fiery Wide Format sessions for 2017
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Questions?
Profiling & Optimization
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Thank you!
Profiling & Optimization