Just shot 4 weddings with a borrowed RF50 (busy weekend) and think I'm going to pass. Told myself I'd get an RF50 when refurbs opened up but to my surprise I prefer the 50 Art more. It handles better, doesn't have cat-eye bokeh, doesn't hunt locking focus in wedding reception light. You give up all those AF points (edges are cut off a bit) and there's no (convenient) IBIS, but with the adaptor you have room for your fingers. Most of the RF lenses are so fat it kills the ergonomics.
Your milage may vary. Of course, the images from the RF50 are lovely (except that 1.2 bokeh), but so are the 50Art's at 1/3 the price. And, it's already in my bag
Which camera are you using? Shooting modes affect bokeh with the RF 50 f/1.2 and there is no way it should be hunting in low light, it blows the SIGMA out of the water for AF, sharpness and rendering wide open.
LeeBaby, how much do you shoot weddings wide open at f/1.2, other than formals? Can you provide a link toyour images?
We have three R6's — bokeh balls are cat eye shape at 1.2 and it hunts in low light. The RF doesn't blow it out of the water. It's better IQ but so close. I'm not crazy, those comparisons are all over the internet.
Just had a copy at 4 weddings and it hunted in reception light. Not every shot, not every scenerio but I've yet to have a R6 'hunting' episode with any the following EF lenses (in my bag) ...Well.. mine has never hunted, and I just asked a couple of wedding photographers if theirs ever hunted and it was a no. Are you using electronic or silent shutter? What AF setup are you using? There is no way the sigma should AF anywhere near as well