This post is directed soley for this software.
Go straight to 5:10 on the video for the software, on the left it looks like they have all their lenses available in the list for the software
5:52 shows the AF adjusment at different focal lengths
6:25 shows the focus limiter adjusment
7:02 shows the focus speed adjusment
AF adjustment at all major focal lengths
AF Speed adjustment (fast and less accurate or slower and extremely accurate)
Focus limiter adjustment
Watch the video. Software will be free download but you gotta pay for the docking station. Apparently this software will work on all current sigma lenses this is my take on it.
I will say this... This software will make me turn sigma only. I understand why canon hasn't done this because of noobs screwing settings up or not knowing what to do but this is a game changer in my opinion!
And also firmware updates for the lenses themselves.