Archived posting to the Leica Users Group, 2000/05/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jean-Claude and Byron: Each of us must have our own formulas I guess. Here's mine. Delta 400 ISO 320 Xtol Full St 68F 5 min 36 sec Delta 400 ISO 320 Xtol 1:1 68F 8 min 40 sec Delta 400 ISO 320 Xtol 1:2 68F 11 min 12 sec Delta 400 ISO 320 Xtol 1:3 68F 13 min 28 sec FULL STRENGTH Working Solution Xtol Stock H2O 7 oz 7 0 12 oz 12 0 16 oz 16 0 34 oz 34 0 1:1 Dilution 7 oz 3.5 3.5 12 oz 6 6 16 oz 8 8 28 oz 14 14 34 oz 17 17 1:2 Dilution 7 oz 2.3 4.7 12 oz 4 8 16 oz 5.3 10.7 28 oz 9.3 18.7 34 oz 11.3 22.7 1:3 Dilution 7 oz 1.8 5.3 12 oz 3 9 16 oz 4 12 28 oz 7 21 34 oz 8.5 25.5 I use ISO 80 for Delta 100 and have tested the same for it as well Bob Bedwell Subject: RE: [Leica] Re: Anyone use Xtol Developer? > Hello Byron, > > The dev times given by Kodak are complexly wrong for me, like for you it seems. > As an example, here are the factors I use for different films (at 24 deg C): > > Delta 100: 1.24 > Delta 400: 1.06 > HP5: 0.99 > Tmax 100: 1.74 (this is consistent with your discovers) > Tmax 400: 1.83 (!) > Tri-X: 1.01 (well, on lazy days, I round it to 1 ;-) ) > > Anyway, I find Delta sharper and having a better tonality than Tmax. > > All the best, > > -- > Jean-Claude Berger (jcberger@jcberger.com) > Systems and RDBMS consultant (MCSE) > Lyon, France > http://www.jcberger.com > > > My rule of thumb for Xtol and Tmax emulsions > > is to take the recommended time and increase it by 50%. > > ... > > I get very consistent development with Xtol and Ilford Delta 100/400 with > > the recommended times, > ... > > Byron. > > >