« on: July 28, 2014, 03:50:30 AM »
There are issues with the 50L. I've had two.
In each case unless shooting wide open there is focus drift which is noticeable between 1.4 and 2.0.
When I got the Sigma there was a higher number of in focus shots than not, the images are sharper and I see none of the 'ugly bokeh' that I've been told about. The lens performs better in the outer points in AI servo mode than the 1.2L does as well.
It's worth the upgrade and I'm someone that likes to stay brand loyal. But the new 50 from Sigma is stunning.
It handles flare better than the L, it has almost zero CA and fringing wide open. For people to say the 1.2 is better either hasn't used the Sigma, had a bad copy or well, whatever.
When Canon releases a new version of the 50L I'll be jumping back to that, because when it does appear it should be better still (revised coatings, lessons learned from the old design and closed loop AF).
Until then, the Sigma 50 Art is the lens to get.