[rollei_list] Re: Apologies to Richard Knoppow
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Sat, 24 Oct 2009 21:19:06 -0700
----- Original Message -----
From: "Eric Goldstein" <egoldste@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Saturday, October 24, 2009 8:29 PM
Subject: [rollei_list] Re: Apologies to Richard Knoppow
Marc -
Like Peter said, I think Jerry misunderstood. I did, too. I
also thought
that the Coke bottle pejorative was being tossed up against
this legendary
lens.
Was the 47mm/2 Ektar on the Retina the same as the LTM lens?
Eric Goldstein
I don't know how to determine this other than
disassembling a sample of each and measuring the curvatures,
etc. Unless one has access to the prescription there is no
way to know if very similar lenses are actually the exact
same design. I do know that some Ektar lenses were made for
the Retina but I don't know the dates. Most Retina lenses
were made by Schneider but, of course, both cameras and
lenses would have been unavailable during WW-2 and for a
time afterward.
Before the war the standard lenses on Speed Graphics
were Zeiss Tessars with some other makes being available
(like B&L Tessars). When Zeiss lenses and Compur shutters
became unavailable Kodak began making lenses and shutters
for these cameras. While Folmer & Schwing (Later the Graflex
Co.) had been owned by Kodak at one time is was independant
at this time but Kodak always had a close relationship with
F&S/Graflex who also made some cameras for Kodak so the
production of lenses and shutters to replace the German ones
seems natural.
I searched through the Kodak patents in LensView. There
are a number of Biotar derived designs, mostly by George
Aklin and Maxmillian Herzburger but its difficult to point
at any one as being a specific production lens.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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