With limited darkroom experience, I'm out on a limb here. My first reaction was "why should soaking with pure water affect sensitivity?".
Then, otoh,... Do people use tap water for this? I believe that water pH could affect the film. If it's pre-soaked in non-neutral water the pH in the emulsion will change too, and reaction speed with it. One place I have lived, tap water usually had pH=9. My films always looked over-developed. I used Agfa rodinal, btw. I also had to add quite a lot of vinegar or citric acid to the stop bath to make it work at all... Took me a while to suspect the water, but once I started using de-ionised water instead, the recommended development times suddenly began to make sense... :-) Jostein ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, February 06, 2003 9:10 PM Subject: OT: [HUG] Film presoak - Cross Post > Seeing as how I belong to both PDML and the HUG, I was wondering if anyone > had comments on this. > > I personally try to pre-soak everything but apparently (at least from the > HUG) it looks as though pre-soaking is not done by some.. and vehemently > opposed by others. > > What does everyone else think? > > Cheers, > Dave > > > Original Message: > ----------------- > From: Philippe Tempel > Date: Thu, 6 Feb 2003 06:00:26 -0800 (PST) > To: [EMAIL PROTECTED] > Subject: [HUG] Film presoak > > > I've recently found out that I get 1/3rd stop more > film speed without a presoak. The presoak I've been > using is for 5 minutes (as recommended by Jobo). So > I've decided to get rid of the presoak altoghether and > dive right in to the developer. I also talked to a > photo lab techie and he also doesn't like to presoak. > He was claiming that it can cause unpredictable > processing results. What are your experiences? > > __________________________________________________ > > -------------------------------------------------------------------- -- > > The Hasselblad Users Group Listserv is a public service of Absolute > Internet, Inc., which is not responsible for its content. This mailing > list is in no way affiliated with Victor Hasselblad AB, it's subsidiaries, > or affiliates. > > Please turn off HTML mail features prior to posting to this list. Use > text mode only. > > To change your subscription status, go to: > http://mail.kelvin.net/guest/RemoteListSummary/Hasselblad > Digest archives are stored at http://www.kelvin.net/hasselblad/hassy.htm > > > -------------------------------------------------------------------- > mail2web - Check your email from the web at > http://mail2web.com/ . > > >
