Upload & Sell: On
i, too, have had negative experiences w/ the older sigma tele-zoom. several copies, several sigma fix attempts and still,
front or back focus issues. I have gone to prime tele's and could not be happier. Still, when the focus worked, the zoom
range was great.
I do shoot w/ a pair of sigma 70-200's, the non-OS and have compared images w/ friends shooting the canon version,
the images are interchangeable, could not tell sigma from canon.
just my 2 cents worth.