Accurate Color Reproduction Workflow Guide
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Accurate Color Reproduction Workflow Guide This document was prepared by Phase One’s Cultural Heritage team. For feedback and general inquiries please contact one of the team members: Carsten Wieser [email protected] Yair Shahar [email protected] Peter Stig-Nielsen [email protected] Liability Phase One disclaims any and all liabilities from the interpretation and use of the information presented in this document. All content and images are provided on an “as is” basis. Any images and/or information used or obtained from this document is done at your own risk and you will be solely responsible for all damage, including but not limited to damage to your computer system, hardware or loss of data. Trademarks & acknowledgements Capture One and Phase One are either registered trademarks or trademarks of Phase One A/S in the European Union and/or other countries. All other trademarks are the property of their respective owners. Revision: 04. July 2015. ©2015 Phase One A/S. All rights reserved. Made in Denmark. COCH WORKFLOW GUIDE V1.3 2 Phase One – Accurate Color Reproduction Workflow Guide Index INTRODUCTION ................................................................................................................................................................................................. 4 1. BASIC REFERENCES AND TOOLS NEEDED ............................................................................................................................................ 5 1.1 Imaging Guidelines .............................................................................................................................................................................. 5 1.2 Software and Tools used in Workflow ........................................................................................................................................ 5 2. INTRODUCTION TO ACCURATE REPRODUCTION WORKFLOW......................................................................................................... 6 2.1. Camera set-up ....................................................................................................................................................................................... 7 2.2. Lights set-up and shielding ............................................................................................................................................................. 7 2.3. ICC profile for accurate color workflow .................................................................................................................................... 7 3. ACCURATE REPRODUCTION WORKFLOW USING READY-MADE ICC PROFILES OF CAPTURE ONE CH ..................................... 8 3.1. Choosing Basic settings (Mode) for Reproduction Workflow in Capture One CH ................................................. 8 3.2 Choosing the ICC-Profile from Capture One CH ...................................................................................................................... 9 3.3 Choosing the Curve from Capture One CH ................................................................................................................................ 9 3.4. Preparing luminance uniformity using the LCC Tool in Capture One ...................................................................... 10 3.5. LCC in the daily workflow for luminance uniformity........................................................................................................ 12 3.5.1. How to automatically apply an LCC profile to every new image ................................................................................................................. 12 3.5.2. Manual application of an LCC profile ........................................................................................................................................................................ 12 3.6. Setting the correct exposure and White Balance ............................................................................................................... 13 3.7. Checklist for Workflow listed in Chapter 3 ............................................................................................................................ 15 4. ACCURATE REPRODUCTION WORKFLOW USING CUSTOM ICC PROFILES ................................................................................... 16 4.1 Preparing Capture One to create a custom ICC Profile .................................................................................................... 16 4.2 Preparing luminance uniformity using the LCC Tool in Capture One ....................................................................... 17 4.3.1. How to automatically apply an LCC profile to every new image ................................................................................................................. 19 4.3.2. Manual application of an LCC profile ........................................................................................................................................................................ 19 4.4. Capturing image of Xrite ColorChecker SG color target ................................................................................................. 20 4.4.1 Setting the correct exposure .......................................................................................................................................................................................... 20 4.4.2 Setting the correct white balance ................................................................................................................................................................................ 21 4.5. Exporting a reference image of Xrite ColorChecker SG color target ......................................................................... 22 4.5.1 Crop the ColorChecker SG color target ...................................................................................................................................................................... 22 4.5.2 Exporting the reference image for a custom ICC profile ................................................................................................................................... 23 4.6. Creating a custom ICC-Profile using BasICColor Input .................................................................................................... 25 4.7. Setting up the workflow in Capture One using custom ICC-Profile ............................................................................ 27 4.8. Checklist to Workflow listed in Chapter 4 .............................................................................................................................. 28 5. ANALYSIS AND VERIFICATION OF IMAGES ACCORDING TO IMAGING GUIDELINES USING WWW.DELT.AE ............................. 29 6. OTHER CONSIDERATIONS ................................................................................................................................................................... 33 6.1. Capture One CH LAB color readout .......................................................................................................................................... 33 6.2. Advantages of reprographic camera system vs. scanner solution .............................................................................. 34 6.3. General Workflow ............................................................................................................................................................................. 36 COCH WORKFLOW GUIDE V1.3 3 Phase One – Accurate Color Reproduction Workflow Guide Introduction This guide is aimed at the advanced Capture One users who work in the field of art and cultural heritage reproduction. It provides a step-by-step workflow starting with the basic studio and environment setup including camera and lighting, through optimization of the capture conditions such as exposure and illumination uniformity, followed by the essential settings and steps in Capture One: ICC input profiles, Develop curves and processing Recipes, and finishing with instructions on how to create custom ICC profiles and how to analyse and verify them using 3rd party software. COCH WORKFLOW GUIDE V1.3 4 Phase One – Accurate Color Reproduction Workflow Guide 1. BAsic references And tools needed 1.1 ImAging Guidelines For detailed information to the popular Imaging Guidelines in the Cultural Heritage World please look at their dedicated website: MetAmorfoze PreservAtion ImAging Guidelines Hans van Dormolen NationAl LibrAry of the NetherlAnds Website: http://www.metAmorfoze.nl FADGI – FederAl Agencies Digitization Guidelines InitiAtive Technical Guidelines for the Still ImAge Digitization of CulturAl HeritAge MAteriAls Website: http://www.digitizationguidelines.gov 1.2 SoftwAre And Tools used in Workflow SoftwAre: Phase One Capture One CH Optional: Phase One Capture One 8 Pro * Phase One Capture One 8 DB * *Certain CH- specific tools such as Auto Crop and smart Positive<>Negative inversion are missing in the DB and PRO versions and therefore some functionality may require several manual steps, losing the efficiency and convenience offered by the CH version. ICC Profile: Phase One Capture One CH ready-made ICC profiles for accurate color workflow Optional: basICColor Input software for custom ICC profile generation Color TArget: Xrite Color Checker SG Optional: A range of color targets can be used, including Xrite ColorChecker SG, Golden Thread Device-level Target, UTT Device-level