In terms of bokeh, both are exceptional, but I think the Canon just has this something the Sigma lacks.
Yeah, it's got f/1.2.....other than that and the build (weathersealing and classic L quality and of course Canon USM) the sigmalux is a really great alternative. Too bad we have to send them in to Sigma to get them calibrated if you don't have micro-adjust on all your bodies.
That said, I made the switch from the 50L to the EX and am very happy I did.
Thanks for the comparison Ben.....



