Olá! I suppose neither are correct(6 or 8m)... My experience says that i have a good contrast and good defenion with the time of 11 minutes at 20ºc,with a film correctly exposed. But it's your film...make a experience with a control film, and after process your photos, but never take risc with an important work. Rodinol and hp5(400 asa) is a very good choise. regards rui noronha www.rnphotography.com _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!