"The Assassination of Jesse James by the Coward Robert Ford".  A picture by Andrew Dominik made in 2007.

Off the top of my head, Fritz Lang, Samuel Fuller and Nicolas Ray have approached this subject.  I really can't remember if it was approached in the order I listed the directors in, and I know that the material presented was all somewhat different but definitely somewhat forgettable.  

Here we have something, unforgettable.  It is the story of Jesse James and his assassination.  Who would have thought, right?  But, it serves as a beautiful engaging piece of work.  Coming in at almost two and a half hours, the picture, although slowly paced, doesn't compromise or exploit a single frame.  With quite a well known cast, which can sometimes be scary, the picture's performances were all properly casted, thought out and performed.

The camera work here is also something that needs to be noted for.  I'm not sure where Roger Deakin's influence has come from but Leonce-Henry Burel immediately came to mind.  In 1950 Burel shot for Robert Bresson on "Diary of A Country Priest".  Apparently Bresson wanted to use the 50 mm lens because it's function related closest to the perspective of the human eye.  While testing for this, Burel used optical diffusion in the form of cylindrical lenses which was put over the key lens.  One of the assistants working positioned the lenses incorrectly, resulting in slightly blurred contours.  Bresson liked the mistake and they stuck with it.  Now, what is intriguing is I doubt Deakin's or his assistants made any mistakes.  If not in it for the story, the photography is worth a look.