
1) Photography equipment
Found on
https://www.crosswordclues.com/clue/colorchecker

The ColorChecker Color Rendition Chart (often referred to by its original name, the Macbeth ColorChecker) is a color calibration target consisting of a cardboard-framed arrangement of 24 squares of painted samples. The ColorChecker was introduced in a 1976 paper by McCamy, Marcus, and Davidson in the Journal of Applied Photographic Engineering. Th...
Found on
http://en.wikipedia.org/wiki/ColorChecker
No exact match found.