I wouldn't put any bets on any lens that only costs $115. If it was really good, Sigma would probably be charging more. See if you can try the lens first at a shop and fire off a few frames of you *ist D to compare with the Vivitar.
On this issue of a full frame DSLR - if Pentax does release one and you want it, having your $239 2 lens kit not work with it won't be the least of your financial worries. -Scott On Wed, 2004-05-19 at 16:39, Amita Guha wrote: > My acquisition of the istD has revealed that my Vivitar 17-28mm is > unacceptably soft; only about the middle vertical third of the frame is > sharp. Therefore I'm looking for a replacement. Nate tracked down the > Sigma DC 18-50mm and 55-200mm kit for US $239.00 at B&H: > http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&; > Q=&sku=304152&is=USA > > These are really tempting, but they're digital lenses, so they'll be > useless when Pentax finally comes out with a full frame DSLR (although I > realize that's a few years away). Also, most of my bodies are film, so > it seems kind of silly to get these. But, they're supposed to be sharp > edge to edge, and the price is pretty tempting. But there are lots of > good reasons to wait and get some better quality full frame lenses as > well. > > Anyway, what would you guys do? I'd love to hear some other thoughts > before I make up my mind on this. > > Thanks, > Amita > >
