Since I'm not writing a full and detailed review, there's 3 major points I'll touch on which are:
Image Quality - I've now owned this lens for 6 months and during that time, it has done nothing but impress me. Although I do love the old EX range (and Sigma lenses in general), I feel like this lens should have been the first lens in the Art line. My copy is definitely tack sharp wide open and like all other 85mm's definitely suffers from CA (although I don't find it troublesome since it's fixed within seconds in post). A lot of people like to wait for a possible 85mm Art which I did at one point, until I realized I rather be out shooting with an already amazing lens than waiting for something that isn't even confirmed. I can assure you that if you are after an 85mm, this is a really great option.
Autofocus - This is probably the part were most people would be disappointed with a Sigma lens (I certainly was with my first copy of the 50mm f1.4 EX). For me, I would dare to say it focuses as well as my Canon lenses in all different types of lighting. I tested mine in the store before I purchased it and I had no issues at all. Once I got it home, I decided to do the dot tune focus method to test it and do some AFMA. For some reason I did find a value of something like +2 (I think at least, was 6 months ago now ߘ ), although after further testing I realized it didn't need any AFMA at all. I must say the only issue I've had with the AF is when using the very outer AF point on my 6D at distances near infinity. I have had issues with this point on other lenses at far distances so I don't believe it is the lens (this is also shooting wide open so the DOF can still be quite shallow).
Build/Design - I really love the huge front element on the EX series lenses, the short and fat look is great to me. The build is very solid and fits in my hand really well.
Here's a few of my favorite images I've taken with this lens.
[IMAGE'S LINK: https://flic.kr/p/K6d3MR]Check In Tokyo by Daniel Lee [IMAGE'S LINK: https://flic.kr/p/GRrEaj]Look Up Bokeh by Daniel Lee
[IMAGE'S LINK: https://flic.kr/p/KLvZRb]Before Anyone Did Anything by Daniel Lee, on Flickr