[pure-silver] Re: PMK and MCS
- From: Christopher Woodhouse <chris.woodhouse@xxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 30 Apr 2006 13:10:00 +0100
Of course, neither of us are recommending using anything other than 'fresh'
fixer!
On 30/4/06 08:55, "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx> wrote:
> From: Christopher Woodhouse <chris.woodhouse@xxxxxxxxxxxx>
> Subject: [pure-silver] Re: PMK and MCS
> Date: Sun, 30 Apr 2006 07:36:33 +0100
>
>> Unfounded....?
>
> Yes, I referred to a specific book that people mentioned.
>
> I've done testing myself and I know the advantages of neutral/alkaline
> fixer, but I have to say that arguments presented in popular darkroom
> book(s) is not something I can agree.
>
>> In addition with alkali fixers, you can go straight from fixer to
>> selenium toning without issue. I noticed Selenium toner takes a nose
>> dive and precipitates grey sludge after acid based fixing, unless
>> extensive washing of the fixed print is undertaken first.
>
> I know that can be done if the fixer is relatively fresh, but I
> wouldn't recommend that sequence for practical purposes, as different
> kinds of stain may result when fixer is nearing exhaustion. A brief
> rinse in water (15-30 sec in running water) is often enough to remove
> this risk. (In case of some fiber papers and polysulfide toners, 2-5
> min wash may be necessary to avoid highlight staining.)
>
>> I was playing with prescysol and was trying to maximise the stain by
>> using alkali stop baths, fixers and developers, but experienced
>> chalky deposits on the film (I believe EDTA is the magic ingredient
>> that dispels this, RS and RK will know for certain).
>
> I don't think there is a practical alkali stop bath. Bill Troop
> described to me stop baths that contained benzotriazoles, etc., but
> treating unfixed prints in such solution will make the material very
> difficult to fix thoroughly. If you use bromide solution, development
> may be halted in that bath, but the risk of dichroic fog may not be
> removed. Like I said in my previous post, as long as excess developer
> is well removed from the film, there is no need to completely arrest
> development before fixation.
> ==============================================================================
> ===============================
> 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.
>
--
Regards Chris Woodhouse
.... __o
.. -\<,
......(_)/(_).......................
=============================================================================================================
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:
