You must first account for shadows
When a viewer suggested that one of Adams' photographs looked abstract, Adams corrected him- "I prefer the term 'extract' over 'abstract', since I cannot change the optical realities but only manage them."
It's organized in 4 sets of dichotomies, which is further broken up into 2 opposite characteristics!
It would be considered a documentation because these are drawing from many years ago.
-Hiadamcom