> They will. Sigma's "DG" lenses are full-frame but "optimized for > digital" (I'm as suspicious of this digital optimization as herb Keppler > is.) Their digital-only (small image circle) lenses are designated "DC".
Thanks Mark, the 70-200 is still definitely an option then. I'm not familiar with Keppler's opinion on digital optimization, would you care to elaborate or post a link to the article? John ---------- Original Message ----------- From: Mark Roberts <[EMAIL PROTECTED]> To: [email protected] Sent: Sat, 09 Apr 2005 06:57:42 -0400 Subject: Re: DG lenses > "John Whittingham" <[EMAIL PROTECTED]> wrote: > > >> i've been eyeing the 500/4.5 and the 800/5.6 for a while. the 500 is > >> available in Pentax mount, at least. the 300-800/5.6 isn't. i hope > >> that the 800/5.6 is. for small bird work, 800 on the *istD is just right. > > > >I think the 800/5.6 would be awesome, personally I'm trying to fill the gap > >in my present outfit needing a fast 200mm AF lens. I'm wondering if they'll > >work with film and digital. > > They will. Sigma's "DG" lenses are full-frame but "optimized for > digital" (I'm as suspicious of this digital optimization as herb Keppler > is.) Their digital-only (small image circle) lenses are designated "DC". > > -- > Mark Roberts > Photography and writing > www.robertstech.com ------- End of Original Message -------
