Last week I put my Leica 50mm Summicron M on the NEX 5n, and the results were amazing! This lens is truly outstanding with lovely colour rendition and incredible sharpness and micro contrast. Sure it ain't cheap, but for a mirror-less shooter, it's probably THE best lens you can buy for your camera.
When you shoot with a lens like this, it's pretty hard to put it away!
|Tulips Sony NEX 5n w/ Leica 50mm Summicron Type 4|