I didn't know Sigma made that lens. I had the 24-70 2.8 from Sigma and liked it, but it was simply a bad range to have as my 'wide' lens. So I returned that for my 17-85IS. Now that I have a 2nd body and just need another somewhat wide lens. At least wider than 70mm. The Sigma 24-70 f/2.8 might not be a bad investment. It was huge, and looked professional. VERY solidly built.
Other than the focal range being to narrow, the zoom ring was pretty stiff. Probably something I could get used to...but stiff nonetheless.
When I get another lens, it'll probably be the Tamron or Sigma in that range. The Tamron has a more practical filter size (67mm) and I have filters for that already. The Sigma 24-70's 82mm filter size was very costly when getting a filter for it.
So it looks like my main options are the Tamron 17-50, Tamron 28-75, and Sigma 24-70. All 2.8's (nice!)
Rumor is, Sigma isn't consistent with this lens. One may be sharp, while the next one soft...etc. This makes me hesitant about this. As for the Tamrons, the 28-75 sounds better so far, simply...the range. I plan to get a 10-22 in the next year or so.
Wow, lots to consider. It would be super to have another wide-ish lens so when I give my 17-85 to use with the XT, I can have the option of using a wider one as well. Maybe this points to the 17-50 then? Or, maybe this points to going ahead and saving for the 10-22? Many many options. They need to stop making lenses
