Re: [Leica] Summicron 50/2 DR eyes?

["Roy Zartarian" <royzart@connix.com>]

DR stands for "Dual Range," an allusion to the lens' close up 
capability.  This model of Summicron is also described as NF for 
"Near Focusing."

The URL is the source I used for Marc's quote.  Way back in my 
academic days I was taught to provide citations for sources.

Roy


On 26 Feb 00, at 13:04, Jerry S. Justianto wrote:

> What is DR stand for and what is 50 DR File?
> 
> Thank
> JSJ
> 
> ----- Original Message -----
> From: Roy Zartarian <royzart@connix.com>
> To: <leica-users@mejac.palo-alto.ca.us>
> Sent: Friday, February 25, 2000 12:39 AM
> Subject: Re: [Leica] Summicron 50/2 DR eyes?
> 
> 
> > One consideration to keep in mind is that two designs of the 50
> > Summicron eyes exist.  The erudite Marc James Small in 1998
> > summarized the differences:
> >
> > "Yes, there are two versions of the DR lens and two versions of the
> > eyes. The older lens is scaled in both metric and feet and the
> > engraving on the eyes has the Leitz lens-diagram logo with 'E Leitz
> > Wetzlar' engraved as well;  the newer lens is either in feet or
> > meters and the lens-diagram logo is missing from the eyes."
> >
> > (http://www.listquest.com/lq/view.cgi?ln=leicausers&sp=21&q=%2b
> > eyes+%2bSummicron&b=1&o=0&x=44&y=9&ci=c104106438&mid
> > =8572}
> >
> > As for sources, Sherry Krauter did have some in stock a few years
> > ago when I thought mine had disappeared somewhere on a forest
> > floor.
> >
> > Roy
> >
> > On 24 Feb 00, at 22:56, A.H.SCHMIDT wrote:
> >
> > >
> > >
> > > John Brownlow wrote:
> > >
> > > > As some of you will know I just bought one of these on ebay w/o the
> eyes.
> > > > Still waiting for it to be delivered, but naturally I would like to
> get a
> > > > set of eyes for it. There's a pair on ebay, but I have no idea what
> they're
> > > > worth or how common/rare they are -- ie should I bid?
> > > >
> > > > Thing is, I can't find them in my international price guide -- is
> there a
> > > > HOOEY (you know what I mean) kind of reference for them? I think it
> might be
> > > > SDPOO but there's no separate listing for this in my guide.
> > > >
> > > > Or has someone on the LUG got a pair for sale?
> > > >
> > > > Also, can someone tell me what the close-focus range is with this
> lens?
> > > >
> > > > Over & out
> > > >
> > > > --
> > > > John Brownlow
> > > >
> > > >        photos:    http://www.pinkheadedbug.com
> > > >         music:    http://www.jukebox.demon.co.uk
> > >
> > >   John, the code is as you said: SDPOO. The eyes come up sometimes at
> camera
> > > swap meetings or similar. I have also seen them at the bigger mail-order
> second
> > > hand shops (Tamarkin etc.) I don't think they where ever sold by leica
> as a
> > > separate item. If so, then only as replacements for lost ones. That's
> probably
> > > why they are not in the price guide.
> > >
> > > The DR Summicron lets you focus down to 19"  or 48cm.  or an image
> magnification
> > > of 1:7.5 Don't forget, this is measured from the film plane at the back
> of the
> > > camera.
> > > If you can not get the eyes, you can also use the SOMKY/16507  together
> with an
> > > UOORF
> > > adapter. The lens head of your DR can be unscrewed and used with the
> SOMKY.
> > > The closest focusing distance is the same as when using the eyes. Using
> the
> > > SOMKY is however a bit more involved than the eyes.
> > >
> > > But don't give up, if you don't find them straight away. I noticed,
> sooner or
> > > later anything Leitz made comes up for sale. Just keep on searching.
> > >
> > > Regards, Horst Schmidt
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> 
>