I recently received a superb book on Henri Cartier-Bresson entitled, "The Modern Century". Those photos were excellent and there were quite a few in this near four pound book. As I began to study the composition, tonal range and sharpness of those photos I had to wonder why I(and maybe you) can't get that look with todays better optics and film. There was detail in most all the highlights of the photos and the shadows were at least what one would call Zone III-IV. None of my photos look as those do in that book. I saw one or two contact sheets and he used Super XX film on many occasions which would, I imagine, pale in comparison to todays FP-4, Delta 400, etc. yet, they seemed nearly grain free, sharp and a superb tonal range. All he had back in the 40's-60's was his Leica M3(probably) and the latest film.
I can't post any photos but you can see the cover and several of the others to get an idea of what I mean. I have an M2, use FP-4 and Tri-X mostly but can't attain the quality he did.
"http://www.amazon.com/gp/product/0870707787?psc=1&redirect=true&ref_=od_aui_detailpages00