[rollei_list] Re: Capa's Cameras
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Fri, 25 Sep 2009 15:13:57 -0700
----- Original Message -----
From: "Carlos Manuel Freaza" <cmfreaza@xxxxxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Friday, September 25, 2009 12:49 PM
Subject: [rollei_list] Re: Capa's Cameras
Marc, this is part of the article quoting New York Times,
Life, US Army, etc.:
Encounter with "LIFE" Photographers
One day in June 1950, David Douglas DUNCAN, a staff
photographer for "LIFE," Horace BRISTOL of "FORTUNE," and
MIKI, Jun who was actively working at "LIFE" as the only
Japanese contract photographer there, visited our Ohi Plant.
In reference to their visit, MIKI wrote an article entitled
"Nikkor and I" in the "Nikkor Club Quarterly magazine No.
26" (issued on November 30, 1963), as follows :
"......
Long piece snipped...
I remember when I was about junior high age and
starting out drooling over the brand new Leica M and Nikon.
I was told then that the f/1.4 Nikor was an extremely sharp
lens and was being modified to fit the Leica.
When its stated that two lenses are "identical" it
implies that the writer has knowledge of the "prescriptions"
for both lenses. Its quite possible for one lens to be based
on another but not be identical. For one thing the glass
types may be different and the original design may have been
recaculated with somewhat different criteria. The Sonnar is
not a simple lens and, in general, the more complex a lens
is and the faster it is the more sensitive it becomes to
variations in its parameters. The f/1.4 Sonnar type made
Nikon's reputation, at least in the US.
The Sonnar design is intended to limit the amount of
flare from glass-air surfaces. It is essentially a Triplet
with only six surfaces. Once good anti-flare coating became
available the Sonnar design fell into disuse because better
performance could be gotten from other types, particularly
the "Biotar" type. Sonnars are also relatively shallow for a
given focal length which tends to reduce the amount of
mechanical vignetting at large apertures but similar
advantages can be had with other designs. It is also a
relatively difficult lens to make because of the number of
cemented surfaces and their relatively steep curvature.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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