I think it's amusing that Sigma have bought out this dock thang....getting us to pay for a device to correct their awful QC and on our time too....come on Sigma. I suspect that Sigma's QC is going to drop even further now...and they will blame their userbase for not stumping up the cash for the USB dock.
Because other manufacturers have no problem at all. Every camera and lens is just perfect, no sample variation, no manufacturing tolerances. None of that. I wonder why they keep offering AFMA on high-end models though?
And of course the possibility to have AFMA on 4 distances and for zooms at 4 extensions (i.e. 16 total parameters) is really really bad. Ridiculous that it even allows users to MA their lenses on bodies without an AFMA feature. Poor bastards with a 60D should just knock their head on Canon's manufacturing tolerances, because this is what they paid for. And for 60 bucks? Puah. When Canikon will do the same they will charge 200-300 and people will be happy then.
Seriously, if you don't like Sigma products for whatever reason that's fine. Everybody has preferences and likings/dislikings. I just don't get your zealous attempt to make it an objective-matter-of-fact point.