Conversation so far:
What was Edward Weston's most famous photograph?
CANNOTANSWER.
How long did each photo take to produce?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Weston was a prolific writer.
His Daybooks were published in two volumes totaling more than 500 pages in the first edition.

Question: What were the main subjects of his writing?
Self-contained rewrite: What were the main subjects of Edward Weston's writing?