For many years I have been a 35mm lens user. Currently my favoured kit is an M1 with a Voightlander 35mm lens. However being a Cartier Bresson fan I thought that I ought to return to using a 50mm lens. So: using a "Barnack" body I took to using a Summer f2 lens. Very interesting. As long as I took care to keep the lens well shaded I got lots of interesting and sometimes very rewarding results. Mjor problem: the scales on the lens are tiny and very difficult to read. Nonetheless combination of camera and lens very unobtrusive and pretty successful, the results often achieving a "retro" look. Moving on to my trusty M1 I fitted a 50mm Elmar. (the very lens that is shown in the M1 instruction manual!). A really nice lens: the camera emains compact and the lens provides excellent results. Problems? I tend to forget to focus it! No rangefinder on the M1 of course. Next up a Summicron. This is surely the definitive Leica lens. Sadly mostly unaffordable! However I did mange to acquire a collapsible version at an affordable price and used it on an M4: I was not going to have the Elmar problems here! Alas I was a little disappointed, I struggled to get good results with this lens, often too soft I thought. However a review of my shooting technique(using faster shutter speeds essentially), taking greater care with processing and using FP4 rather than HP5 suddenly brought about substantial improvements. Finally I "accidentally bought a Nokton f1.1 50mm lens. Then I read a terrible review of it. Actually it performed pretty well. The real problem with it was the size and weight. Suddenly My Leica felt like a dslr with a giant lens and my camera bag caused my shoulder to droop alarmingly! All things are subjective of course but the Nokton has the classic japanese contrasty attributes which give the effect of sharpness much loved by photo journalists (As I think my 35mm lens does. However I like the compactness of the Summicron, but it needs to be treated with respect in terms of film and processing to produce results to do it justice. So I wonder what other folk like in a 50mm lens?