Yep, my bad. I (maybe incorrectly) assumed the programming was the same on both cameras.
j On 9/3/05, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: > Ah, thanks for the correction. I guess I was thrown off by the > subject line, which said "istD/s". ;-) > > Godfrey > > On Sep 3, 2005, at 11:55 AM, Juan Buhler wrote: > > > Actually. mine is an istD. *And*, I had it set to the mtf program > > mode. Still, it is strange that the camera would insist on f/2.4 at > > 1/30s with an FA50/1.7. > > > > On normal program, it behaves more or less as Godfrey's list posted > > yesterday. > > > > j > > > > On 9/3/05, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: > > > >> Interesting. > >> > >> Juan and I were looking at the *ist DS model, which has different > >> programming. > >> > >> Godfrey > >> > >> On Sep 2, 2005, at 5:26 PM, Herb Chong wrote: > >> > >> > >>> on the *istD, there are four program curves. none of them except > >>> MTF depend on the specific lens. that means that all f2.8 lenses > >>> have the same curve in normal, high speed, and depth-of-field > >>> program modes. > >>> > >>> Herb... > >>> ----- Original Message ----- From: "Godfrey DiGiorgi" > >>> <[EMAIL PROTECTED]> > >>> To: <[email protected]> > >>> Sent: Friday, September 02, 2005 1:34 PM > >>> Subject: Re: Auto-selected shutter speed on istD/s--wrong? > >>> > >>> > >>> > >>> > >>>> Seems to me there are likely only a few Program curves. Seemed to > >>>> me that the shorter lenses stop the lens down a little faster, > >>>> once it starts to stop down, compared to the 135mm, although I > >>>> didn't go all the way and generate a set of graphs... I wonder if > >>>> the MTF data from the FA lenses is weighted into the curve too. > >>>> > >>>> The points at which aperture starts to close down seem about right > >>>> to me, although the F50/1.7 does seem a little low compared to > >>>> the relationship between the 35 and 135. > >>>> > >>>> > >>> > >>> > >>> > >> > >> > >> > > > > > > -- > > Juan Buhler > > http://www.jbuhler.com > > photoblog at http://photoblog.jbuhler.com > > > > > > -- Juan Buhler http://www.jbuhler.com photoblog at http://photoblog.jbuhler.com
