lenicoloas - I totally disagree with you. Weston's still life work evoked a very strong emotional response with many. Diego Rivera once wiped his eyebrow and remarked how sensual some of those still objects seemed; they are loaded with psychological inferences. I happen to admire the ability to state something in a highly nuanced rather than openly choreographed manner. But if you want to get into a bit of Weston's own impressions in relation to the subliminal quality of some of his pictures, read his Daybooks.
I guess this would be akin to arguing that Andrew Wyeth's paintings evoke emotion, but not Rothko's. But I'd say that one does it at more a popular surface level, but nowhere near as deeply as the other, who does it far more subliminally.