How to Use a Color Card for Photography (Color Checker)
Product name
color analysis/configuration/comparison/calibration/whatever
12x12 Foldable White Balance 18% Gray Reference Reflector Grey
Color Checker Chart, Color Checker Board
Datacolor Releases Their New Color Reference Tool: Spyder Checkr
Lens Rentals
DaVinci Resolve Tip: Using a Color Chart to Match Your Shots
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How To Use a Color Checker Chart — Timely Photo
white balance - Xrite Colorchecker color specifications and 18
Thorsten Overgaard's Leica Photography Pages - Lightroom color
Review of Macbeth ColorChecker Color Rendition Chart and graycard