William Robb wrote: > ----- Original Message ----- > From: "Doug Franklin" > Subject: Re: Sigma 300/2.8 DG for Pentax > > > >> By the logic you're using above, it seems to me there'd be no reason for >> them to have replaced the FA series withe DA series. I can't imagine >> how a 50-200/4.5-5.6 for full frame could be as small and light as the >> DA version. That could simply be a failing of imagination on my part, >> though. ;-) > > I think your argument loses itself with longer focal length lenses. A 600mm > lens is going to have a big image circle no matter what. It's just the > nature of the beast.
Well, there you go. That's what I was missing. -- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
