I have a set of old Nikon F tubes which use the same principle, they're
called K1, K2, K3, K4 & K5. Of course they don't do automatic aperture stop
down or pass the aperture setting to the body.
...Wayne
> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of Piers Hemy
> Sent: Tuesday, 14 March 2023 5:12 AM
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Subject: Re: [OM] More pix from Cute Gear
>
> Exakta extension tubes are an oddity - the male and female bayonets
> unscrew from the tubes, which all have threads, not bayonets. And the two
> bayonets can be screwed together for a very short extension. I have a
spare
> set if you have an urge...
>
> ....as well as the Kopil Bellowsmat tilt/shift bellows. With a CZJ Tessar
> 50/2.8 sunken mount, which is a predecessor of the Zuiko 135/4, a macro
lens
> which can focus to infinity.
>
> Sorry for the OT, it was a big boy who started it, but he ran away....
>
> Piers
>
> On Sat, 11 Mar 2023, 22:45 Moose, <olymoose@xxxxxxxxx> wrote:
>
> > Six more pix from the Steinheil Culminar 135/4.5 <
> > http://exaktaphile.net/captjack/Steinheil%20page.htm>
> >
> > On 3/10/2023 7:08 AM, Wayne Shumaker wrote:
> >
> > > Nice. Curious, does the back end tube come off or is replaceable
> > > between
> > a longer one and a shorter one? I saw one of
> > > these available with a longer tube.
> >
> > As the lens was sold, it fit the exacta mount with infinity focus. All
> > the other examples I saw for sale were in that default state. As
> > removal of the back tube is obscure, I can't imagine there are two
> > lengths.
> >
> > On this site, they talk about removing the glass and aperture "head"
> > from the focusing helix, for mounting on a bellows.
> > To do that, though, requires a special adapter, Novoflex "CULEX" or
> > equivalent.
> > http://exaktaphile.net/captjack/Steinheil%20page.htm
> >
> > On mine, the tube behind the focusing helix has been removed and the
> > mount from it screwed onto the back of the helix. I assume from this
> > that the tube part of the lens tween helix and mount is male/female
> > screw thread. I don't have that part.
> >
> > > Now to just make the frog blow the bubbles.
> >
> > I'm not sure I have the patience to teach an old frog new tricks.
> >
> > > Did you do much post processing? I assume the contrast is low for
> > > the
> > lens.
> >
> > No post processing of brightness, contrast, etc., but for one of this
> > batch, which is in two versions. All others with the look of Sony
> > sensor system and LR/ACR Raw conversion defaults.
> >
> > I've been having fun with the lens.
> >
> > Tubeless Moose
> >
> > --
> > What if the Hokey Pokey *IS* what it's all about?
> > --
> >
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> >
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