Grow Color Gamut to make signage pop

Transcription

1 Grow Color Gamut to make signage pop Toby Saalfeld Ricoh Commercial & Industrial Printing US Director, Color Management SGIA Expo New Orleans, LA October 10, 2017 Toby Saalfeld Toby Saalfeld is US Director, Color Management for Ricoh Americas Corporation. In this role, he designs color management innovations that focus on the real world needs of commercial print, in-plant, publishing and design environments, with a vision to raise the bar industry-wide with services and products that make color management a worthwhile investment for anyone from the design stage to final production. Working in the production printing industry since 1996, Saalfeld has become a leading authority and expert on real world color management solutions. In 2012, he developed and is now leading Ricoh's Color Elite Team a group of highly specialized Color Management Experts located throughout the United States. Prior to joining Ricoh in 2009, Saalfeld held positions in engineering, sales, and marketing, and worked at some of the top enterprise companies in the industry, including: Xerox, Konica Minolta, and Hitachi Printing Solutions (both in Europe and the United States). Originally from Düsseldorf, Germany, hometown of the world's largest international print event DRUPA, Saalfeld is now based out of Los Angeles, California. He is an IDEAlliance certified G7 Expert and Color Management Professional Master. 1

2 Agenda Definition of Gamut Industry Standards Rendering Intents Color Conversion Color Accuracy vs. Maximum Gamut G7 Methodology G7 vs. ICC Soft proofing 101 Key Takeaways Definition of Gamut Color Gamut......describes the entire range of colors available on a particular device such as a monitor, printer, scanner, camera, projector, or other device capable of capturing or producing colors. 2

3 Industry Standards RGB Additive Color Model (Red, Green, Blue mixed together result in white). Typical applications: monitors, scanners, cameras, and projectors. CMYK Subtractive Color Model (Cyan, Magenta, Yellow, Key (Black)) also called process color used in color printing. SPOT Premixed ink used instead of or in addition to process inks. Requires its own printing place / channel. Industry Standards RGB srgb, AdobeRGB, ProPhoto RGB, ECIRGB, EFIRGB,... CMYK SWOP, GRACoL, SNAP, Fogra,... SPOT Pantone, HKS, Toyo, DIC,... (Reflex Blue, Coca Cola Red, McDonald s Yellow...) 3

4 Industry Standards 100% RGB green (AdobeRGB) 100% RGB green (srgb) Industry Standards Basic Color Management Workflow (CMYK printer) Raster Image Processor (RIP) RGB CMYK PMS (Spot) Gray Source Profile Profile Connection Space Destination Profile CMYK 4

5 Industry Standards Basic Color Management Workflow (CMYKOG printer) Raster Image Processor (RIP) RGB CMYK PMS (Spot) Gray Source Profile Profile Connection Space Destination Profile CMYK Industry Standards Basic Color Management Workflow (CMYKxxxxxx printer) Raster Image Processor (RIP) RGB CMYK PMS (Spot) Gray Source Profile Profile Connection Space Destination Profile CMYKxxxxxx 5

6 Color Conversion Source Color Space PCS Profile Connection Space Destination Color Space Industry Standards GRACoL 6

7 Industry Standards GRACoL vs. srgb Industry Standards GRACoL vs. Adobe RGB 7

8 Industry Standards GRACoL vs. ProPhoto RGB Industry Standards GRACoL vs. Epson Stylus Pro 9900 (on Traditional Photo Paper) 8

9 Industry Standards srgb vs. Epson Stylus Pro 9900 (on Traditional Photo Paper) Industry Standards Adobe RGB vs. Epson Stylus Pro 9900 on (Traditional Photo Paper) 9

10 Industry Standards - Checkpoint Industry Standards provide a common target for accurate printing Industry standards can limit your device s gamut Select an appropriate color space for your application If industry standard accurate print is not required: Disable RIP s industry standard simulation to gain maximum gamut Consider implementing two independent workflows Max Gamut Accuracy to industry spec Rendering Intents Out of Gamut... Colors that fall outside of the capturing or reproduction capabilities of a device. 10

11 Rendering Intents srgb vs. Epson Stylus Pro 9900 (on Traditional Photo Paper) Rendering Intents Basic Color Management Workflow (CMYK printer) RIP RGB CMYK PMS (Spot) Gray Source Profile Profile Connection Space Destination Profile CMYK 11

12 Rendering Intents - Colorimetric Keeps in-gamut colors accurate Moves out of gamut colors to the edge of the target gamut..... Absolute Colorimetric retains source white point (new white point is usually not white) Relative Colorimetric moves source white point (new white point is paper white) AdobeRGB to GRACoL Rendering Intents - Perceptual AdobeRGB to GRACoL Moves ALL colors Color shifts are proportional Keeps gradients well Not accurate Can result in desaturated images depending on the difference between the source and target gamuts 12

13 Rendering Intents - Saturation GRACoL to Epson Stylus 9900 on Traditional Photo Paper Moves ALL colors Not accurate Color shifts are proportional Used to convert from small gamut to larger target gamut Keeps colors as saturated as Possible while preserving Relationship between colors Rendering Intents - Checkpoint Know the color (gamut) capabilities of all of your devices Be aware of potential Out of Gamut colors Chose between maximum gamut and accuracy Colorimetric (relative/absolute) rendering intent for accuracy Saturation/Presentation rendering intent for max gamut 13

14 Color Conversion RGB <> CMYK Color Conversion RGB - CMYK 14

15 Color Conversion Closed Loop Color Management Color Conversion Profile Connection Space (Translator) Open Loop Color Management 15

16 Color Conversion RBG L*a*b* CMYK Color Conversion CMYK L*a*b* CMYK 16

17 Color Conversion CMYK L*a*b* RBG Color Conversion RBG L*a*b* RBG 17

18 Color Conversion - Checkpoint Color Conversion is unavoidable! A simple settings mistake can ruin a whole job Ensure all devices in your workflow are profiled and calibrated Custom profiles yield most accuracy and device color gamut Know when to disable ICC color management on printer (only for maximum gamut applications without accuracy requirements) Color Conversion - Checkpoint No Color Management Traditional calibration only Calibration and profiling 18

19 What is G7? What is G7? What is G7? Method of Calibration! 19

20 What is G7? = 50 G7 Calibration = 50 =

21 G7 vs. ICC Color Management G7 = Calibration = Consistency Eliminates Color Cast Visually pleasing outcome Does not clip gamut of device ICC (Colorimetric) + Calibration = Consistency + Accuracy Accurate to source/output profile combination Limited to lowest common denominator gamut G7 - Checkpoint G7 alone is not sufficient to print to an industry specification G7 neutralizes CMY gray and as a result eliminates color cast Perfect option for maximum gamut printing on large gamut devices G7 is compatible with all CMYK printing processes 21

22 Soft Proofing Soft Proofing 22

23 Soft Proofing Soft Proofing 23

24 Soft Proofing Adobe RGB vs. Epson Stylus Pro 9900 on (Traditional Photo Paper) Soft Proofing Mandatory steps: Create ICC profile of your printer (for each substrate) Profile and calibrate your monitor Adjust brightness of your monitor to ambient lighting Import profile(s) into your design application Select profiles in proof setup Additional recommended steps: Use a light booth to view the printed material in comparison to your monitor Dim ambient light as much as possible Use a hood around your monitor if ambient light can t be controlled Work in a color distraction free environment (color neutral desk, walls, clothing) 24

25 Soft proofing - Checkpoint Monitor gamuts are typically larger than printer gamuts You can simulate the printed output on your monitor, but not the other way around Perform a paper white to monitor brightness check Ensure you set the proper expectations Higher accuracy requirements means more dedication: custom ICC profiles frequent calibrations (monitor and printer) Suitable environment Key Takeaways Know the objective: Max Gamut vs. Accuracy (Pick one!) Know our equipment: The tool is only as good as the user Hire a coach to maximize ROI of your equipment Set appropriate expectations for yourself and with your customers 25

26 Ricoh Professional Color Management Can include any device from any manufacturer! Receive coaching on industry best practices! Maximize the ROI of equipment you already own! Learn how to communicate color effectively! Minimize color miscommunication with clients! Come see me on the Ricoh booth (1351)! Questions and Answers Thank you! 26