Several readers have asked me about the differences between the old and the new 2016 versions of the Leica Summicron-M 35mm f/2 ASPH ($2,995) and Leica Summicron-M 28mm f/2 ASPH ($4,095) lenses that were announced back in January. Here are two videos from the Brooklyn Shooters YouTube channel that should cover the main differences between both versions:
And few more Leica comparison videos from the same channel: