Lane Wilson gave a wonderful talk in my zone system class yesterday. The most important sentence he said that rang true to my ears was, "Your artistic creativity will only be as good as your technical knowledge." I've been saying this to myself in so many words, which is why I'm continuing to struggle through this zone class.
He is an artist who has the technical knowledge to create what his mind-eye sees. Check out his web site and feast on his beautiful images. http://www.lanewilson.com/