That being said...I do not think that the Sigma is a compromise in any way. I just got a 5DMkIII (but have not used it much yet)...so my references are from the MkII. I have found the Sigma to have good autofocus, great bokeh wide open (a little soft but all of these large aperture lenses are not their sharpest wide open)..and with the aperture closed down a little the lens is AMAZINGLY sharp. Really. Also...I found the Sigma to be less expensive and not as much of a beast to tote around like the Canon 50mm f/1.2, an yet the Sigma "approaches" that lense's bokeh. (I think that the Canon f/1.2 lens may auto-focus more slowly, too, than the Sigma..but I could be wrong on the point..not sure) The Sigma has the best balance of all of these lenses for me. I know that everyone's shooting style and needs are different...so this may not be the prime normal lens for everyone, but I have been very happy with my choice in this area.
I gotta agree.. I picked up the sigma 50 as well... Love it.
It had a slight front focusing issue that I was able to fix with MFA.. I took it in to sigma along with the body, and had them calibrate it.. It reduced the front focus a bit.
I also like the fact that it's a 77mm filter size.
Despite all of the internet chatter about how many problems the Sigma has with AF, mine (recent smooth finish) nails focus with the outer focus points on my 5D2 in moderate light. My 100L misses every single time on the outer points in moderate to good light.
If the Sigma was branded as a Canon and came out as the replacement for the existing Canon 1.4 at this price point, everyone would be high-fiving Canon IMO. Just goes to show a long history of mediocrity on the part of Sigma is very tough to overcome in the marketplace. Especially in the case of this lens where apparently the early ones with the rough finish had some issues. But for me, taking a chance on them worked out nicely.
can you post a link of where to buy this recent siggy with smooth finish?
I bought mine from B&H.
5D3, 70-200 f/2.8L IS II, 100L, 24-105L, Sigma 50/1.4, Canon TC 1.4x III