[rollei_list] Re: Sort of OT: Jobo ATL-1500 listing...
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Mon, 2 Mar 2009 17:40:18 -0800
----- Original Message -----
From: "Robert Lilley" <54moggie@xxxxxxxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Monday, March 02, 2009 11:36 AM
Subject: [rollei_list] Re: Sort of OT: Jobo ATL-1500
listing...
Here, Here!
We get real nit picky about our camera's performance
insisting on a 1000ths of an inch tolerance and debate
lenses long and hard, but then we develop by the seat of
our pants. Eh what's a few degrees among friends? Don't
sweat it, I'll pull it short or let it lie a few extra
seconds. Close only counts in horseshoes and hand
grenades - its only B&W!
Fancy controls! Was it true that early Kodachrome
development was timed by classical music scores? If so, I
am going to find the perfect temperature to time D-76 1:1
development using Procol Harum's "Simple Sister"
Rob
Now that its easy to search US patents using Google
Patents one can find many of the early Kodak patents
applying to color film. In particular it appears that
Leopold Mannes and Leopold Godowski, the two
musician-chemists who are generally given the credit for
devising Kodachrome, applied for and got many patents
contrary to some earlier wisdom that Kodak kept everything
secret. A couple of the patents are for the controlled
penetration of solutions into an emulsion, an important
principle for the first Kodachrome processing method, but
they also worked on anchoring dye couplers and other
important mechanisms. There were certainly other researchers
at Kodak working on color photography methods and some of
their patents can be found be making a more generalized
search for the period from about 1920 to about 1950. Most of
the work after about 1940 was aimed at coupler-incorporated
emulsions.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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