[rollei_list] Re: Lens Question
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Fri, 19 Oct 2007 02:28:47 -0700
----- Original Message -----
From: <marvin0@xxxxxxxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Thursday, October 18, 2007 10:16 PM
Subject: [rollei_list] Re: Lens Question
Two questions for the lens buffs out there.
1. Can anyone comment of the 2.8 Sonnar on the Rollei XF
35.
2. Is the SchneidarXenotar or Xenon on the Kodak Retinas
the same design as the one used on the Rolleis.
Thanks,
Marvin.
Sent via BlackBerry® from 3
I am unaware that a version of the Xenotar was used on
Retina cameras although one may have been made for the
camera. There were two systems of lens interchange used on
Retina cameras. The earlier ones had a fixed internal
element, behind the shutter, which was common to three front
components. Because one component was common to all three
some design compromises must have been made. This
arrangement was later replaced by one with a rear shutter
and interchangible complete lenses.
The first lens to bear the name Xenon was made by
Schneider in co-operation with Leitz for the Leica camera.
Later versions were made for a great many cameras, generally
as a six element lens of about f/2 but also versions with
speeds to about f/1.5 for motion picture cameras. I believe
these had seven or more elements. Xenon and other Schneider
lenses were standard on Arriflex cameras.
Kingslake gives a German patent number for the first
Xenon but I have not found a good internet source of older
German patents and I can't find a U.S. patent with the right
date either in Google patents or in LensView, a patent
database program.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
---
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