Ahh - I found the problem. There was a menu item that had to be changed. AF mode was set to "C" which I guess means continuous. Changing it to "S" allowed the trap focus to work as it should. That might explain why yesterday, when using an autofocus lens, there was some hunting taking place in some scenes where it usually didn't do that.
Shel > [Original Message] > From: Godfrey DiGiorgi <[EMAIL PROTECTED]> > To: <[email protected]> > Cc: Shel Belinkoff <[EMAIL PROTECTED]> > Date: 4/11/2006 7:05:49 PM > Subject: Re: Trap Focus with istDS > > Trap focus only works with manual focus lenses and only when the AF/ > MF switch is on AF. Because it only works with manual focus lenses, > only the center focus sensor is active regardless of which focusing > mode you've got the camera set to. > > Shel, you probably have the AF/MF switch set to MF. > > Godfrey > > On Apr 11, 2006, at 7:00 PM, Paul Stenquist wrote: > > > You shouldn't have to set a menu item. And if it's set on > > autofocus, it shouldn't fire until something is in focus. You would > > want to use selective focus. If it's on multipoint, it will find > > something in focus other than the subject. > > Paul > > On Apr 11, 2006, at 9:53 PM, Shel Belinkoff wrote: > > > >> OK, that's what I thought, but the camera fires even when there's > >> nothing > >> in focus. Is there a menu item that has to be set? > >> > >> Shel > >> > >> > >> > >>> [Original Message] > >>> From: Godfrey DiGiorgi > >>> > >>> On Apr 11, 2006, at 6:15 PM, Shel Belinkoff wrote: > >>> > >>>> I seem to have forgotten how trap focus works on the istDS. > >>>> Can someone refresh my memory? > >>> > >>> With a manual focus lens, set a focus distance and flip the AF/MF > >>> switch to AF. Hold the shutter release button fully depressed. When > >>> the AF sensors pick up a subject in focus, the focus indication > >>> light > >>> will turn green and the shutter will trip. > >> > >> > >
