Archived posting to the Leica Users Group, 2000/05/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]So, Mark, if I use Xtol at 1+1 and am getting too much contrast with Tri-X (and I don't want to increase grain), should I extend dev time? Julian - ----- Original Message ----- From: "Mark Rabiner" <mark@rabiner.cncoffice.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Sunday, May 07, 2000 6:54 PM Subject: Re: [Leica] (Xtol) Why 1+3 dilution ? > Dan Cardish wrote: > > > > But more dilution implies longer development times which in turn implies > > longer exposure to the sulphite which implies less grain. > > > > Dan C. > > > More time in a formula with less silver solvents (sulfite) in it, Dan! > Sodium Bisulfite is put in D23 to make it D25 for that very reason you describe. > It lowers the pH so it spends more time in D23's high sulfite environment. > Mush grain is the result. > Your focusing magnifier in you darkroom shows you a mushroom field! > Prints look like someone put Vaseline paste on the front element of a lens! > Mark Rabiner >