I couldn't wait to mount the Jupiter-3 5cm f1.5 lens on it and try it out. One thing was immediately apparent, and disappointing, is that the minimum focus distance is ONE meter, even worse than the Voigtlander 40mm f1.4 Nokton, which is 0.7m. Oh well. This is normal with range finder lenses, unfortunately. With that aside, I like the this little lens. Reasonably and sharp enough for portrait wide open. In fact, I like the pictures taken at f1.5 quite a bit. Yes it's not bitingly sharp but it's quite acceptable. This lens is perfect for shooting people in low light. I can see why so many people love the Sonnar 50mm f1.5, Zeiss or not.
William, not liking his picture taken - NEX-6 & Jupiter-3 5cm f1.5 @ f1.5. Click for larger.
William - NEX-6 & Jupiter-3 5cm f1.5 @ f1.5. Click for larger.