Just wondering if anyone has strong opinions about
this lens: Sigma 24-70mm f/2.8 EX DG Macro DF Autofocus. I know Jon has said he prefers Sigma glass. Also, anyone know if this lens vignettes on 1.5x digital with a 82mm to 77mm step-down ring?
I'm also looking up reviews, but I was wondering what you all thought about this lens as well.
EDIT: Also came across this:
the Sigma 24-60mm f/2.8 with a 77mm front. Doesn't seem to be built as well as the 24-70mm.
EDIT 2: I ask everyone, "What are you shooting?" but- naturally- forgot to say it. If you don't know, I'm shooting news: events, portraits, sports, the works. Currently, my bag usually has a 17-35mm f/2.8D AF-S and an 85mm f/1.4D AF in it (70-200mm with/without TC-20E for telephoto); I also have a 50mm f/1.8D AF handy, as well as a 105mm f/1.8 AIS. In the midrange zoom category, I have the 18-70mm DX and 28-105mm f/3.5-4.5D AF. The 24-70mm f/2.8 EX is something I'm considering for the middle when I don't want to carry the 17-35, 85mm, or anything in between- and I only need f/2.8. I don't really want the Tamron 28-75mm f/2.8, though I do like the results it produces.
Also, Samy's doesn't carry Sigma products so I can't really go out and try these.
EDIT 3: Yes, I've been searching the forums and reading other posts, in case you're wondering. =)