The Canon 50mm F1.2L certainly can produce a beautiful photo, and has wonderful bokeh, but there are still many complaints that users have regarding softness wide open, focus shift, and major AF shortcomings. This lens was released 8 years ago. Do folks think that Sigma's production of their 50 F1.4 art will put pressure on Canon to release a higher-performing 50 F1.2L II to outcompete it? If the Sigma ends up performing as well as anticipated, at its price I would think many 50L users might jump ship. Curious to hear folks' thoughts on this...