VOIGTLANDER NOKTON 50/1,0

The Voigtlander is not only cheaper but better in just about every area of expectations from a modern hyper-corrected lens with the exception of chromatic aberration which the Leica seems to control better with less purple fringing - maybe. I have not, however, seen a side to side comparison by a skilled photographer which convinces me that one is truly better than the other in practice.