[rollei_list] Re: Rolleiflex T with Planar?
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Thu, 11 Jul 2013 16:43:19 -0700
----- Original Message -----
From: "John Wild" <JWild@xxxxxxxxxxxxxxxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Thursday, July 11, 2013 3:18 PM
Subject: [rollei_list] Re: Rolleiflex T with Planar?
The Rolleiflex 3.5B had a Tessar and was Bay 1; The
Rolleiflex 3.5C had a Planar and was Bay 2 but the outer
Bayonets on this all but touched each other and the knurled
wheels too, making changing EV difficult. After that F&H
increased the lens spacing to compensate for the larger Bay
2 mounts. There are two Mutars for the 3.5 cameras for that
reason. Off hand I cannot remember if it is about 1mm or 2mm
difference.
If the Planar has to be Bay 2, possibly because of front
element diameter, then the whole front of the 'T' would have
to be rebuilt around a 3.5 Bay 2 front plate. What the lens
spacing is on a 'T' I do not know; however, this camera has
a 'T' front plate which looks unmodified.
John
I don't think you could change the lens spacing without
changing the whole frame. Its a matter of the optical
center of the two lenses, both must be centered on their
respective image planes, i.e., the film and the finder
ground glass, you can't just move the lenses. It _might_ be
possible to change a Planar for a Tessar, provided you can
get the back focus right and a bunch of other things. Its
beyond me why anyone would want to do this other than
perhaps cobbling a camera together from damaged ones.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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