[rollei_list] Re: Planar vs. Planar
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Wed, 3 Mar 2010 12:06:31 -0800
----- Original Message -----
From: "Laurence Cuffe" <cuffe@xxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Wednesday, March 03, 2010 8:40 AM
Subject: [rollei_list] Re: Planar vs. Planar
I'm looking at a lens described as follows
This is old! Engraving on barrel states: No. 6989 Ross,
London and
then Planar 1:4 f205mm 8 inch with Zeiss Patent
underneath. Must be
c.1880
on the english version of Ebay. I would, from the
history, assume
that the seller has got his dates wrong, however does any
one know if
Zeiss marketed a different lens with the sam name earlier?
All the best
Laurence Cuffe
On 3 Mar 2010, at 14:14, Richard Knoppow wrote:
The US patent for the Planar 583,336 is dated 1897 and
the British patent is dated a year earlier. I suspect the
engraving on the lens barrel is worn and has been mis-read.
Ross had the British manufacturing concession from Zeiss
just as did Bausch & Lomb in the US and Krauss in France.
This was done probably to avoid high trade tariffs. The
original Planar was an f/4.5 lens but may have been made a
bit faster.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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