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[Rollei] SL 2000F,SL 35 E shutter and related stuff
- Subject: [Rollei] SL 2000F,SL 35 E shutter and related stuff
- From: Dirk-Roger Schmitt <Dirk-Roger.Schmitt
- Date: Fri, 02 Jun 2000 19:21:57 +0200
concerning some discussion in which I also took part on the matters of the
subject I read half an hour in Prochnow at my local bookstore.
Here are some results:
SL 35: Mr. Peesel, chairman of Rollei, was putting once Mr Prochnow a
Pentax Spotmatic on a table and said: "I want that you build this camera."
Complaints of Prochnow months later about the lack of open aperture
measuring where not accepted by Peesel.
SL 350: Only few information about history given. Prochnow says it is the
35 mm camera of Rollei he likes best.
SL 35M(E): Due to the overtaking of Voigtländer / Zeiss Ikon by Rollei
they got a lot of production tools ready to make thousands of cameras. So
it was cheaper to decide to use these tools than to build new tools for
mass production of SL 350.
SL 35 E shutter: As the fabric shutter is large and fixes the camera design
(first the shutter was to be developed and than the rest of the camera
designed around the shutter) Rollei wanted the small metal blade shutter
for more flexible design. They looked at a Seiko shutter which had the
mechanics on the left side. They decided to design a similiar own shutter
with more symmetrical shape with mechanics on the left and right side. As
Rollei wanted to compete strongly against Japanese manufacturers they
wanted to have an own shutter and not to be depended on Japanese supply on
a key product.
SL 2000F: First design came from an architect from he city of Hamburg who
presented his design proposals to Rollei. First design looked like a
smaller SLX. Second proposal he presented was accepted by Rollei and they
used this shape to develop the 2000.
80-200 Zooms: The first 80/200 MC zoom was from Tokina, the second 80/200
HFT from Mamiya.
Aperture automatic: They tried to develop a system to use the lens pin to
close the aperture to a defined degree by mostly keeping the whole
bajonette design. A patent existed to stop the pin at a certain position
with an electro magnetic system. However, this was not regarded to be too
much reliable and thus not followed.
Some of our Rollei friends did express their information that
The 35 E shutter and 2000 design came from the overtaking of Zeiss/Ikon /
According to Prochnow that seems NOT to be the case.
Who later on build the SL 2000 shutter is still unclear, however my
information (not from Prochnow) says that it always had been a Copal
shutter (maybe after Rollei specs.)