Archived posting to the Leica Users Group, 2011/07/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Pyrocat is not a two bath, but you probably know that. My times and temps are as follows: FP4 35mm @ ASA 100: 2:2:100 (5ml A, 5ml B) 500ml total volume. 10 minutes, 20C, Normal agitation of 10 seconds every 60 seconds. This is the minimum dilution for a roll, so don't use a single roll tank and double the dilution. If using density meter the blue channel will give most accurate results due to the stain. KB100 120mm @ ASA 50 or 64: 2:2:100, 11 minutes, 22C, low agitation 10 seconds every 3 minutes. I used this time/agitation for highlight compensation, density of 1.27 above fog for zone VIII. Increase agitation to normal and drop the time by 2 or 3 minutes for same ASA. Pyrocat will hold dense highlights, it's what is is known for. To avoid streaking and uneven development don't twist during agitation, streaking happens with twisting motion on SS reels rather then the amount of agitation, or perhaps one modifies the other, Anyway I found a definite correlation with twisting and uneven development; streaking may be a different animal altogether. Chris On Mon, Jul 25, 2011 at 11:16 AM, Paul Roark <roark.paul at gmail.com> wrote: > On Mon, Jul 25, 2011 at 7:37 AM, Richard Wasserman > <disfromage at ameritech.net> wrote: > > ... I use reduced agitation?... which increases edge effects ... > > FWIW, my standard development procedures when I was using the Rollei > SL66 with Tmax 100 was to use dilute (1:3) Microdol-X with agitation > at 3 minute intervals. The infrequent agitation gave great sharpness, > which was a real plus with the enlarger, but it has turned out to be a > mistake with digital tools when these negatives are scanned and > printed today. I find it much easier to sharpen in Photoshop than to > reduce the grain (and local unevenness) caused by the infrequent > agitation. If I were to go back to shooting the SL66 and Tmax 100, > I'd look at developers that gave me maximum smoothness and leave the > sharpening to PS, where I can do it locally as opposed to globally. > > Paul > www.PaulRoark.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Chris Saganich www.imagebrooklyn.com