I remember a few months ago someone was selling a
military 400-2200,, f2.2-11 catadioptric lens. The
thing looked like a bazooka. As to how you can change
the focus of a mirror lens I don't know but apparently
they can do it.
Mark Lloyd
--- Jim Brokaw <jbrokaw@xxxxxxxxxxx> wrote:
> on 3/14/02 7:53 AM, Jeffrey Keller at
> jeffreyrkeller@xxxxxxxxxxx wrote:
>
> >
> > Has anyone seen a zoom CAT before?
> >
> >
>
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1339006943
> >
> > The only thing I can imagine is a CAT with a
> teleconverter mistaken as a
> > zoom. Mirrors don't adjust their focal length.
> >
> > -jeff
> >
>
> Might be a 400 mirror with a zooming post-mirror
> optic in the mount. Appears
> to be Pentax-brand, so I think it probably works,
> but f8-12 seems a little
> dim to be useful, I have troubles with the f8 on my
> 500 and 600 mirrors.
> --
>
> Jim Brokaw
> OM-1's, -2's, -4's, (no -3's yet) and no OM-oney...
>
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