[pure-silver] Re: Developing Kodak Royal Pan
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 12 Jun 2012 00:51:43 -0700
----- Original Message -----
From: <JS2RT@xxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, June 11, 2012 11:16 AM
Subject: [pure-silver] Re: Developing Kodak Royal Pan
My 1958 Master Darkroom Dataguide shows an exposure index
of 200, with a
developing time of 15 minutes in D76, 9 and a half minutes
in DK50 (1+1), and
6 and a half minutes in straight DK50.
In a message dated 6/11/2012 11:58:29 A.M. Mountain
Daylight Time,
martin.magid@xxxxxxxxx writes:
I bought a box of 4X5 Kodak Royal Pan 4141 at a camera
show. It appears
to be factory sealed and the seller, a guy I know and
trust, said it's been
refrigerated, but it is very old. There's no expiration
date on it, but
the lot # is 4141 565 16, if that means anything to anyone
on this list.
I haven't opened the box yet so don't know if it contains
developing
instructions, and Royal Pan isn't even listed on the
Massive Developing Chart.
My plan is to develop and fix a sheet in the dark without
exposing it to
see if there is a base fog, and to do the same with
another sheet after fully
exposing it to light to see how black it gets.
I have Rodinal, D-76 and DK-50 on hand. Any suggestions
on developing, or
ISO if I decide to shoot with it (as opposed to just
experimenting)?
Marty
The 1958 book probably has the old ASA speeds which
were _half_ the ISO speeds because of the safety factor.
My 1988 Darkroom Dataguide gives the speed as ISO-400
Development:
D-76, continuous agitation (tray) 8 min @ 68F
Agitation at one minute intervals (large tank) 10 min @68F
Dk-50 1:1, 6 min @68F continuous agitation, 8 min @68F 1
minute agitation.
Times are also given for HC-110 dil A, dil B, Microdol-X,
DK-50 full strength. I probably have a data sheet archived
but would have to look for it.
My memory is that Royal Pan is a long-toe film similar
to the old Plus-X and Tri-X Pan Professional films. I think
its main purpose was to provide an ISO-400 B&W film to match
the speed of color films for use on the same shoots because
the equivalent Tri-X Pan Professional is ISO-320. Royal Pan
would allow simply interchanging film holders with the
color film without adjusting the exposure.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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