Archived posting to the Leica Users Group, 2007/10/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The problem with apparent sharpness or acutance is that it rarely has much to do with resolution. TMX, for instance, has excellent resolution (from Kodak's charts), but quite low acutance. I use Acros when I want to record fine detail - I have measured that it is finer grained than APX 25 was and it looks nicer to me than Delta 100, TMX or any of the other comparable films. It is a monosize cubic-grain emulsion, which for me seems to offer the best advantages of modern technologies, but do not have the processing touchiness of flat-grain or epitaxial emulsions. I can't get it to work in Xtol 1+3, so I use 1+1 or a home-made equivalent with the same developing agents as Xtol 1+1, but with the sulfite of 1+3. Xtol is remarkable and works better than most ascorbate developers because it works at high dilution and moderate (Kodak calls it 'mildly alkaline') pH. Other more normal developers that contain ascorbate at higher pH work well, but not as well as Xtol. >THE future of my silver developing my go in Metol Ascorbic acid developers. There are some metol ascorbate developers described by Pat Gainer here: http://www.apug.org/forums/forum223/39769-experiments-metol-ascorbic-acid.html >And Pyro with Metol. There is a pyro ascorbate developer here: http://www.digitaltruth.com/techdata/article-stainingdev.php you could replace the phenidone with metol (you need more metol than phenidone) and go from there. The TEA will definitely provide a high enough pH to activate those developing agents. Good luck, Marty Gallery: http://gallery.leica-users.org/main.php?g2_itemId=7617 Most people can only judge of things by the experiences of ordinary life, but phenomena outside the scope of this are really quite numerous. Shen Kuo - 'Dream Pool Essays' -- Want an e-mail address like mine? Get a free e-mail account today at www.mail.com!