Archived posting to the Leica Users Group, 2002/03/25

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Subject: Re: [Leica] Re: Darkroom Question
From: "Roland Smith" <roland@dnai.com>
Date: Mon, 25 Mar 2002 20:59:11 -0800
References: <5.1.0.14.2.20020325091116.0e89d098@pop.alink.net>

I wondered if others used water instead of stop bath for film.   I have been
doing that since the middle 1950s.

I do use stop bath for prints.   Is this really necessary?

Roland Smith
Oakland, California
- ----- Original Message -----
From: "Jim Brick" <jim@brick.org>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Monday, March 25, 2002 9:24 AM
Subject: [Leica] Re: Darkroom Question


> At 09:04 AM 3/25/2002 -0600, Bill Satterfield wrote:
> >Was in the darkroom over the weekend developing film.  I use  a tank. On
> >one batch, I used a  ounce of short stop to 15 1/2 ounces of  water
rather
> >than a 1/2 ounce. Film looks OK.  What harm did I do and what can I
> >expect?. A mental error caused by waiting to long to develop rolls of
> >film. Perhaps, I ought to develop more frequently. Thanks
>
>
> Actually, no harm. I have never used a stop bath in film processing in my
> 50 years of darkroom work. It is unnecessary. But too much stop won't
> bother anything anyway unless you are using a developer containing
> carbonate. Which there are none of nowadays.
>
> Hydroxide will evolve CO2 but Rodinal is about the only normal contrast
> developer containing it. But I have never known anyone to have stop bath
> problems, regardless of concentration.
>
> When I started darkroom work in the 50's, there were carbonate containing
> developers being used and stop bath had the possibility of causing "pin
> holes" which is gas forming within the emulsion, rapidly being released,
> causing an eruption thus a pin hole. Because of this, I was taught (Brooks
> Institute of Photography) to simply use water as a rinse between the
> developer and fix with film. It has served me well for all of these years.
>
> Jim
>
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>


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Replies: Reply from "Christopher Williams" <LeicaChris@worldnet.att.net> (Re: [Leica] Re: Darkroom Question)
Reply from "Don" <don.ro@verizon.net> (Re: [Leica] Re: Darkroom Question)
Reply from "Will" <wlarsen@ocsnet.net> (Re: [Leica] Re: Darkroom Question)
In reply to: Message from Jim Brick <jim@brick.org> ([Leica] Re: Darkroom Question)