#COLOR19Color Management

Success Starts with Inputs

Dr. Erica Walker, Clemson UniversityProf. Penny Ann Dolin, Arizona State University

Different Cameras SeeColor DifferentlyNikon vs Canon vs SonyAll comes down to the following:

Filter array Proprietary ProcessingRAW algorithm

First, How Does a Camera See?Or, how do you go from :

To this:

The PhotoElectric EffectA chip is covered with a series of small electrodes called photositesOne photosite for each pixelYour chip has a charge, or voltage, applied to each photosite when the camera is turned onLight hitting the silicate photosite causes electrons to “want to be released” in proportion to the number of incident photons (or light striking)

The strength of the voltage creates your image

Excited Electrons Do Not Have ColorA color filter array is neededIt provides a color interpretation for each photosite

An RGB Array

The most common CFA is the Bayer Array

Proprietary Processing

When a raw file is created in a digital camera, it has no inherent profile.

*J Opt Soc Am A Opt Image Sci Vis. 2014 Feb 1; 31(2): 312–321.

RAW, RAW, RAWWhen a raw file is created in a digital camera, it has no inherent profile - it must be processed.Different camera manufacturers of software have different processes or algorithms to process the digital-negative or RAW file.PhaseOne: IIQ Nikon:NEF Canon:CRW CR2 CR3 Sony:ARW, SRF, SR2 Olympus:ORF and so on…

The Value of Adobe Raw ConverterIn the beginning you had to have the proprietary software of each vendor to open RAW filesAdobe Raw ConverterAnd now you know why you have so many Camera Raw updates!

https://helpx.adobe.com/camera-raw/kb/camera-raw-plug-supported-cameras.html

Nikon PictureControl System

Canon Picture Style Control

Standard • Portrait • Landscape • Neutral • Faithful • Monochrome

Sony Creative Style versus Picture Profile

Picture profile is for movie mode

Creative Style is for photography

Put Yourself in Charge of Your Color▪ Understand your working and final color spaces▪ Shoot Raw▪ Use a X-Rite ColorChecker Passport

Working & Final Color Spaces sRGB, Adobe RGB, Prophoto, CMYK...

Use a Color Checker PassportGrey card for white balance

Color checker design- top panel

Color checker design- Profile swatches

Click -> Lightroom -> Profile

Detail lost in the shadows Detail lost in the highlights

Photoshop & Using Passport SoftwareShoot your scene with the Checker in it (with the lighting you want to use)

Export as a DNG

Launch ColorChecker Passport App

Place your DNG with the checker in it, on the app

Create Your Profile

Profiles in Camera Raw

Browse Preset Options: Camera Matching•Artistic•BW•Modern*Vintage

Full cycle of capture calibration

1. Calibrate monitor2. Create custom profile

for camera & lens combination within the specific lighting situation

3. Printer profile

Additional resources▪ https://www.color-management-guide.com/color-management-in-lightroom.html▪ https://www.color-management-guide.com/web-browser-color-management.html▪ https://www.dpbestflow.org/color/color-management-overview#raw_def▪ Video from x-rite- https://youtu.be/5d5xSdin2GM▪ Sony Creative Style-

http://docs.esupport.sony.com/dvimag/ILCE6000_guide/en/contents/TP0000301878.html▪ Sony Picture Profile- http://helpguide.sony.net/ilc/1420/v1/en/contents/TP0000435736.html▪ https://www.color-management-guide.com/choosing-color-spaces-srgb-adobe-rgb-98-prophot

o.html▪ https://www.viewsonic.com/library/photography/color-management-guide▪ Delete extra profiles-

http://xritephoto.com/ph_product_overview.aspx?ID=1257&Action=Support&SoftwareID=1932