Originally posted by Barron I know this reply is a little late, but I just got my 30mm 1.4 and thought it was going to be HSM equipped. I checked out the side of the page like you said and saw that Pentax and Sony don't come with it.
I think the dealers need to be making this clear since their sites (Adorama anyway) state it is has HSM.
Anyway...
I think I'd have to disagree with you on this one - the problem is Sigma isn't even clear on what they currently have on the market. They also don't have a history of discontinued items (at least not a full, conclusive list) showing lens lineage. The dealers really are left to fend for themselves on this one. When I bought the sigma 120-400mm early this year, it was transitioning from no OS to an OS version - multiple dealers had one or the other listed for sale - I had to call and confirm, only to find out the listing was incorrect (advertised the new version, had the old version). This was with 42nd st photo. The rep was great though, contacted sigma and found out the OS versions were coming that week, and I got it prior to prices being adjusted up (by about 20%). In the end that is what you've got to put up with from a 3rd party maker that runs the same lens down a line and slaps a half dozen different mounts on the back end (and does so at their own convenience, with the likes of Pentax and Sony picking up the scraps). Until they start shipping their goods with actual product numbers (for each variation) and providing the dealers with appropriate descriptions, it is all squarely on Sigma in my book.