I like that look with the low clouds in the background, probably about the best photograph of that tree I have seen. I really like that you have not included the whole tree, which makes it all the more interesting, to me.
I would suppose that Harold Cazneaux probably never thought that particular photograph would become so well known world wide. If I remember correctly, he was Dick Smith's grandfather.
Does that Voigtländer lens fully cover 4x5", or is it a case of stop down and no movements?