To be honest : i'm a Sigma Art fan (no AF problems as some are afraid of, out of experience with the non-Art cheaper line).
The Art line is like the L lenses (mostly even better IQ)
I replaced my 35L with the 35Art, and I bought a 50 1.4 Art as it was much better than the problematic 50L.
But for the 85 Art it's a different story.
I have the 85 1.2L MKI, which is razorsharp, ok slow focussing but for modelshoots this isn't important.
Af f1.2 gets double the light in than f1.4 I would stay with the Canon for once.
Some people say f1.2 is too thin, but for full body shots it's superb and the model is completely sharp.
So the optics of the 85L can hardly be matched and the Art will be no dreamy f1.2
The only positive would be the faster AF (no OS i thought?), so i'd stick with the 85L for once.
It there would be a 135 Art OS with the same topquality IQ as the 135L I would switch to the Art for the OS.
the 85L is not what I consider "razor sharp". It's somewhat passable with nice background blur. Whatever makes you happy really, if it's the 1.2, then it's the 1.2. I think there's a healthy crowd for more sharper lenses. Take the 24-70 and 70-200. New versions are much sharper and generally more preferable.
Already Pre-Ordered
haha
