There's a nice overview here: https://svi.nl/TwoChannelHistogram https://svi.nl/TwoChannelHistogram I don't know any professional photographers who use 2D hist

There's a nice overview here: https://svi.nl/TwoChannelHistogram https://svi.nl/TwoChannelHistogram I don't know any professional photographers who use 2D histograms for editing, or whether you can actually plot them in Lightroom or Photoshop. However for scientific image processing it seems to be more useful. OpenCV also has a tutorial: https://docs.opencv.org/3.3.1/dd/d0d/tutorial_py_2d_histogram.html https://docs.opencv.org/3.3.1/dd/d0d/tutorial_py_2d_histogra... But which of the 'coming chapters' it's referencing I have no idea.