Re: [APML] Medium format cameras

[Dean Jacobsen <deanjacobsen@earthlink.net>]

Steve, do you have any experience with the Pentax 67 and the Pentax 
lenses?  What started me down this road was some of John Gleason's wide 
field photos of the Milky Way with the 105mm and 165mm lenses.

Dean Jacobsen
www.astrophoto.met

At 09:48 PM 11/8/2003 -0500, you wrote:
>The Pentax 6x7 vignettes all by itself. It is meant to use with camera lens
>designs in which the final lens elements are enlarging the light cone much
>as a barlow does. The 6x7 lens mount does not allow full illumination of the
>film when most telescopes such as refractors or refractors are used.
>
>This was one reason I abandoned the 6x7 for the Mitsuboshi system.
>
>Steve...
>
>----- Original Message -----
>From: "Phillip Jones" <starfest@comcast.net>
>To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
>Sent: Saturday, November 08, 2003 8:25 PM
>Subject: Re: [APML] Medium format cameras (was:Tak. FSQ-106 for
>mediumformatfilm?)
>
>
> > Alan,
> >
> > I should probably add that the focuser on the FS-102 is a 2.7" focuser,
> > which was designed for 6x4.5 medium format. My understanding is the Pentax
> > 6x7 is too large for the 2.7" focuser, which is why there is not a Pentax
> > 6x7 adapter available for the .2.7" focuser sized FS series refractors.
> >
> > However, you might consider getting the 6x7 for piggyback photography for
> > now, and hang onto it in the event you get a 4" focuser refractor in the
> > future.
> >
> > -Phil
> >
> > ----- Original Message -----
> > From: "Alan Voetsch" <critter12952@yahoo.com>
> > To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> > Sent: Saturday, November 08, 2003 2:25 PM
> > Subject: [APML] Medium format cameras (was:Tak. FSQ-106 for medium
> > formatfilm?)
> >
> >
> > > Hey all,
> > >
> > > The discussion between Dean and Kirk has gotten me thinking about
> > > moving up to a medium format camera. Actually I've thought about it
> > > many times, but I only now have an instrument that can utilize MF. The
> > > Tak FS-102 will be able to handle that format and once I'm comfortable
> > > with it and the new G-11 with Gemini, I would consider trying a bigger
> > > format camera.
> > >
> > > What I would like to know is if anyone has a tutorial, or such on their
> > > website regarding this. Or barring that, can anyone give any pointers
> > > on what to look for in such a camera. The reason I ask is that I saw
> > > one advertised on astromart last week that had a purge system already
> > > installed. This camera had been used on a 102 and I assume that the
> > > user knew what he was doing. My assumption has always been that a
> > > camera body is basically just a film holder. I'll qualify that by
> > > saying that I would probably also use it for piggyback shots.
> > >
> > > All things being equal, is the camera manufacturer important here? Are
> > > there certain things to look for? To avoid? Is a Pentax 67 the wise
> > > choice in the long run?
> > >
> > > What I really want is to be pushed in the right direction so when I do
> > > have the cash for such a purchase, I hace done my homework and can jump
> > > on it then without screwing up. At that point, I would like to know of
> > > any adapters, etc... that would be necessary. Any guidance would be
> > > much appreciated.
> > >
> > > Thanks,
> > > Alan
> > >
> > >
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