I was on a test shoot of this lens with Ron Sheffler. I have added my own samples from this lens. and a link to Ron’s Review:
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Ron Scheffler has posted a very good review of the new Voigtlander 21mm F/1.8 lens over on his website. He does a direct comparison against the Leica 21mm Summilux, The Super Elmar, and the Zeiss 21mm.