Comparison: Voigtländer APO-Lanthar 50mm to the Leica Summicron-M 50mm, Carl Zeiss Sonnar 55mm and the Sony FE 1.8/50 
So, how does the new Voigtländer APO-Lanthat 50mm stack up against the venerable Leica Summicron 50mm, as well as the two Sony native lenses on a Sony full frame camera? Let's find out!
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