The piano has eighty-eight keys, and you have to be able to play all of them. And the range of white to black is analogous to the eighty-eight keys and you have to be able to play all eighty-eight keys in that palette from white to black.
Ansel Adams...one sees differently with color photography than black-and-white... in short, visualization must be modified by the specific nature of the equipment and materials being used.
Ansel Adams