[pure-silver] Re: Efke R100 Chapter 2: PMK
- From: Jean-David Beyer <jeandavid8@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 19 May 2011 11:03:25 -0400
Tim Daneliuk wrote:
> On 5/19/2011 9:35 AM, Jean-David Beyer wrote:
>> Now I use Jobo plastic reels that I find more difficult to load, though
>> I can do it. Because I develop all except 8x10" Kodalith film in a Jobo
>> tank, even my 4x5 stuff.
>
> I open tank process everything - even film on reels. I do have an
> old plastic reel I could try since the film probably tends to
> move less against plastic. The problem is that PMK is a very fast oxidizing
> developer and you have to move new developer across the film
> or you get streaking. I'm concerned that the plastic reel would
> note provide enough flow around the edges of the film to make sure
> there was sufficient transfer of new developer at the edges of the film.
>
I wonder if the reels matter; I rather suspect they do. Jobo made two
series of reels. One series, whose number I do not know, were of smaller
diameter, so the film layers were rather close together. The series I
have are callee Duo Set 2502 and will take three sizes of film, 35mm, 2
rolls of 120 or one roll of 22o, and something in between (about 1 7/8
inches). The outer diameter of these reels is about 5 inches, so the
film is well spaced (layers are about 1/8 inch apart). They fit the 2500
series tanks. I have no idea if they are still available. I believe the
4x5 size reel is called 2509N.
--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 10:50:01 up 33 days, 14:08, 3 users, load average: 5.22, 5.07, 4.93
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
