Color Management Fundamentals Wide Format Series

Transcription

1 Color Management Fundamentals Wide Format Series Kerry Moloney Field & Channel Marketing Manager Fiery Wide Format John Nate WW Technical Product Training Manager Fiery Wide Format

2 Session overview Color management fundamentals, including basic color theory and management terms Get the best out of all of color technologies, regardless of the technology type Focus today on printing, with an emphasis on some wide format printing considerations Take a quick poll 2

3 Topics to be covered Color management defined Color space Color accuracy and Delta-E (ΔΕ or de) Device dependent and device independent color Gamut Rendering intents & black point compensation Color transforms Calibration & profiling Spot colors 3

4 What is color management? And why do we need it? 4

5 Color management is A process, not a task Ensures color fidelity between devices Limited by each device 5

6 Color management is A process, not a task Ensures color fidelity between devices Limited by each device 6

7 Color management is A process, not a task Ensures color fidelity between devices Limited by each device 7

8 Color management is like making toast by Steve Upton 8

9 Color management is like making toast by Steve Upton 9

10 Color management is like making toast 10

11 Color management is like making toast

12 Color management fundamentals Basic terms 12

13 Color space (L*a*b*) L* 0 13

14 Color space (L*a*b*) a*

15 Color space (L*a*b*) b*

16 Color space (L*a*b*) L* b* a* 16

17 Color space (L*a*b*) L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 17

18 Color space (L*a*b*) L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 18

19 Color inaccuracy Hue - color Chroma - saturation Luminance - brightness 19

20 Hue Cooler Actual Color Warmer 20

21 Where is your color? L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 21

22 Hue L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 22

23 Hue L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 23

24 Chroma - Saturation Less Saturation Actual Color More Saturation 24

25 Chroma or Saturation L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 25

26 Chroma or Saturation L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 26

27 Chroma or Saturation L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 27

28 Luminance Darker Actual Color Lighter 28

29 Where is your color? L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 29

30 Where is your color? L* = 100 White b* Yellow -a* Green Gray a* Red -b* Blue L* = 0 Black 30

31 Delta-E or ΔΕ or De Original Color Delta-E 3 Delta-E 7 31

32 Device dependent color 32

33 Device dependent color R = 201 G = 5 B = 2 R = 206 G = 3 B = 7 33

34 Device dependent color CMYK = 1/84/95/2 5/93/88/0 0/97/90/8 34

35 Device dependent color CMYK = 1/84/95/2 5/93/88/0 0/97/90/8 L*a*b* = 56/95/54 35

36 Gamut 36

37 Gamut 37

38 Gamut 38

39 Gamut 39

40 Gamut 40

41 Gamut 41

42 Gamut 42

43 Gamut 43

44 Color space SWOP 44

45 Color space SWOP vs. GRACoL 45

46 Color space SWOP vs. GRACoL vs. Inkjet 46

47 Color space SWOP vs. GRACoL vs. Inkjet vs. Adobe RGB 47

48 Color space SWOP vs. Toner vs. Inkjet 48

49 Gamut Larger Smaller 49

50 Gamut? Larger Smaller 50

51 Spot colors 51

52 Spot colors Pantone Bridge 52

53 Color management application Decision time 53

54 Rendering intent Larger Gamut Smaller Gamut In-Gamut Colors Out-Of-Gamut Colors 54

55 Perceptual

56 Perceptual

57 Perceptual

58 Perceptual

59 Perceptual

60 Perceptual

61 Perceptual

62 Colorimetric

63 Saturation

64 Colorimetric relative vs. absolute Newsprint Absolute Colorimetric Newsprint Relative Colorimetric 64

65 Banding Original Perceptual Colorimetric 65

66 Banding Original Perceptual Colorimetric 66

67 Banding Original Perceptual Colorimetric 67

68 Banding Original Perceptual Colorimetric 68

69 Black point compensation Newsprint 69

70 Black point compensation 70

71 Black point compensation 71

72 Black point compensation 72

73 Graphic program defaults 73

74 Graphic program defaults 74

75 Assigning vs. converting 75

76 Assigning vs. converting Assigning = Change the way the image looks/prints Converting = Keep the look the same 76

77 Assigning vs. converting Assign = Not the same taste 1 Tb. = 1 Tb. 77

78 Assigning vs. converting Convert = The same taste 1 Tb. = 4 Tb. 78

79 Assigning vs. converting Original Color in GRACoL 23/92/53/17 40/50/14 79

80 Assigning vs. converting Original Color in GRACoL 23/92/53/17 40/50/14 Assign SWOP 5 23/92/53/17 41/51/10 80

81 Assigning vs. converting Original Color in GRACoL 23/92/53/17 40/50/14 Assign SWOP 5 23/92/53/17 41/51/10 Convert SWOP 5 24/93/61/19 40/50/14 81

82 Converting GRACoL SWOP 82

83 Assigning vs. converting Assign Convert Assign 83

84 Calibration and profiling Controlling your color 84

85 Calibration Calibration is active 85

86 Calibration Calibration is active Match a device to itself over time 86

87 Calibration Calibration is active Match a device to itself over time Bring to a repeatable state 87

88 Calibration Calibration is active Match a device to itself over time Bring to a repeatable state Tuning the guitar 88

89 Calibration Sometimes called linearization Linearization is only one part of calibration 89

90 Calibration cameras Shutter speed Aperture White/gray balance 90

91 Calibration monitors Brightness Contrast White point 91

92 Calibration output devices 92

93 Calibration output devices Per channel ink/toner limits Per channel linearity Total ink/toner limit Ink gray balance Usually through the use of a RIP 93

94 Calibration output devices Per channel ink limits 94

95 Calibration output devices Per channel ink limits Wet No additional saturation No additional saturation Wet 95

96 Calibration output devices Per channel ink limits Wet 92% No additional saturation 89% No additional saturation 96% Wet 81% 96

97 Calibration output devices Per channel linearity (ink or toner) 75% 97

98 Calibration output devices Per channel linearity (ink or toner) 75% 25% 98

99 Calibration output devices Per channel linearity (ink or toner) Non-Linear 75% 25% Non-Linear 99

100 Calibration output devices Per channel linearity (ink or toner) Non-Linear 75% 25% Non-Linear 25% 50% 75% Linear 100

101 Calibration output devices Total ink limit No darker 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% 101

102 Calibration output devices Total ink limit No darker 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% TIL 102

103 Calibration output devices Total ink limit No darker 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% TIL Wet 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% 103

104 Calibration output devices Total ink limit No darker 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% TIL Wet 280% 290% 300% 310% 320% 330% 340% 350% 360% 370% 380% 390% 400% TIL 104

105 Calibration output devices Ink gray balance Poor gray balance Questionable Gray Balance Good Gray Balance 105

106 Calibration output devices Ink gray balance Poor gray balance Questionable gray balance Good Gray Balance 106

107 Calibration output devices Ink gray balance Poor gray balance Questionable gray balance Good gray balance 107

108 Profiling Profiling is passive ICC Profile International Color Consortium 108

109 Profiling Profiling is passive A snapshot of the device characteristics 109

110 Profiling CMYK 0/100/66/0 0/51/24/0 66/36/24/0 92/0/81/23 0/0/0/30 L*a*b* 61/127/105 73/36/13 55/-10/-18 46/-55/16 78/0/0 110

111 Profiling CMYK = 0/100/66/0 CMYK = 1/84/95/2 0/100/66/0 0/97/90/8 L*a*b* = 61/127/105 L*a*b* = 61/127/

112 Color management is like making toast

113 Session summary What we learned Basic color management concepts apply to getting the most out of all types of color technologies Take charge of your color management setting and options Color management is not a single task, rather a complete process To learn more, we have some resources for you 113

114 Additional resources ABCs of Color Rendering Intent Black Point Compensation articles Glossary of color terms Complete Guide to Color Management A Guide to Understanding Color Communication The Color Guide and Glossary 114

115 Additional World of Fiery sessions May 27 Color Management Fundamentals Learn the foundations of color theory and management to get the most from your design software and color technologies. June 17 Color Standards & Specifications Gain knowledge of the latest industry standards and how they apply to wide and superwide format printing and proofing. July 8 Color Management Inside Fiery XF & Fiery proserver Put your knowledge into practice and understand RIP-level color controls. Production Series for wide format printing starting this September, you can register your interest for these on the World of Fiery Webinars home page 115

116 Color management fundamentals Questions? 116

117 Color management fundamentals Thank you! 117