If I recall correctly I believe it was said that Monet wanted to repaint some of his work after he had his cataracts removed. He was very disappointed that the paintings did not match the scene.
When photographing subjects where the colours are well known it does help if you can try and keep them faithful. Colour calibration has played a part in various jobs I have had over the past 40 years. I have been lucky that my colour vision has been good but not blessed with the colour vision that most women have.
As for selling my photos - I wish
