Your theory is sound, but it doesnt work in practice, the camera will just
let you take the photo stil..

Cya
----- Original Message -----
From: "Nicholas Wright" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, July 18, 2001 6:57 AM
Subject: Trap Focus with AF Glass (was: Why wont but MZ-S)


> --- "David A. Mann" <[EMAIL PROTECTED]> wrote:
> >  After using the Z-1p with long manual focus glass,
> > I wouldn't buy an AF
> > camera that didn't have trap focus.  I will change
> > that decision when I get a
> > long AF lens :)
> >
> >  Same goes for DOF preview.  It's a must-have in my
> > opinion.
> >
> > Cheers,
> >
> >
> > - Dave
> >
> > David A. Mann, B.E. (Elec)
> > http://www.digistar.com/~dmann/
>
> I've thought about this as well, the solution is
> simple and requires no ext tubes etc to be added (this
> is hypothetical since I have not tried it, simply
> because I do not have any of these types of lenses
> currently... anyone that has the types of lenses tha
> I'm about to mention that could confirm this it would
> be appreciated). All of the high end Pentax 35mm glass
> has a focus "clutch" mechanism on the lens itself, by
> sliding the focus ring either towards or away from the
> body you can switch between auto and manual focus
> without touching the AF mode switch on the body. So,
> could you not set the body to single AF, and use the
> clutch on the lens to go to manual and thereby have
> trap focusing with an AF lens?
>
> Nick
>
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