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The Wikipedia article is far more informative, though I'm uncertain if read the full dpreview article due to ad-induced nausea. https://en.wikipedia.org/wiki/C

• rwmj 29d ago
  https://en.wikipedia.org/wiki/Color_chart https://en.wikipedia.org/wiki/Color_chart is even better if you want to just know about the subject. The Viking Mars Lander had an early colour chart (three times over, for some reason) as shown in this NASA photo: https://www.msss.com/mars/pictures/viking_lander/22a158corr.jpg https://www.msss.com/mars/pictures/viking_lander/22a158corr....
  • isomorphic 27d ago
    That lander had all sorts of fiddly protrusions on it, so the multiple charts could have been to avoid self-shadowing all of them. Or they were worried about chart stability after shipping it across interplanetary space. Or the test targets were for angles for multiple cameras?
• DavideNL 29d ago
  > "read the full dpreview article due to ad-induced nausea" lol, made me chuckle. Tip: 1. install "uBlock Origin", and configure it to "Medium Mode" [1] 2. Install "Obsidian Web Clipper" and use the "Reading View" button to read articles [2] Trust me, you'll love it. [1] https://github.com/gorhill/uBlock/wiki/Blocking-mode#medium-mode-details- https://github.com/gorhill/uBlock/wiki/Blocking-mode#medium-... [2] https://addons.mozilla.org/en-US/firefox/addon/web-clipper-obsidian/ https://addons.mozilla.org/en-US/firefox/addon/web-clipper-o...