Seriuosly, I don't notice the 85L 1.2 II being slow to focus at all. In addtion, the AF is very accurate at all apertures and doesn't need MF tweaking. I'm not sure why everybody is slaying a very fine lens. To the OP and other fence sitters, buy the lens and enjoy. As I said in a previous post, a ver III is probably many years away.
Oh no please dont misunderstand I wasnt slaying it at all
I just tried them both out side by side and focusing on near far near far the canon is considerably slower than the sigma its pretty snappy if everything you are shooting is in a similar area so its not having to move all that glass so much
I think IQ wise there is not alot that is better than the 85L wide open at 1.2 its sharper than the sigma at 1.4
however at f2 i think its a different story. Not to mention the epic price gap between the 2 I dont think the 85L is 2.5 times better. It is better but thats purely pixel peeping.
If money is no object and the slower AF is not an issue then the 85L is the way to go
If you want to save a ton of coin the sigma is well worth considering
also with the sigma being more compact its a little more convenient
the 85L is like having a watermelon strapped to the front of the camera however it is super impressive looking so has epic wow factor too