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Photo Forum / Film Photography / Darkroom / April 2004Where to find Pyrocat-HD develop time for various films?
Where can I find the development time for various films? particularly for Ilford FP+125, Panf 50, HP-400, and Agfa APX-100? Thanks. > HP-400, 8 minutes, 20C @iso200 It's the only one I got data for. Moda > > HP-400, > [quoted text clipped - 3 lines] > > Moda Look in www.unblinkingeye.com and get it straight from the horse's mouth. Sandy King has an article there. That article only mentioned the time would be shorted than PMK or WD2D, but nothing beyond that. It did mentioned the development time for standing developement would be 45min ~ 60min, but for standing developement, the developement is irrelevant. I believe many readers would be very appreciated for your pointing to that site, but let's make sure we know what we are suggesting. > > > HP-400, > > [quoted text clipped - 5 lines] > Look in www.unblinkingeye.com and get it straight from the horse's > mouth. Sandy King has an article there. > That article only mentioned the time would be shorted than PMK or > WD2D, but nothing beyond that. It did mentioned the development time [quoted text clipped - 3 lines] > I believe many readers would be very appreciated for your pointing to > that site, but let's make sure we know what we are suggesting. You didn't read the whole article. Look at page 4 of it. There are curves of contrast index vs development time for many films. > Where can I find the development time for various films? particularly > for Ilford FP+125, Panf 50, HP-400, and Agfa APX-100? > > Thanks. I've never seen pyrocat listed, or care for lists anyway. I have worked for more than a year now with pyrocat, and it is my all time favorite. Every film I've used all seem to prefer 1:1:100 dilution, as opposed to 1:2:100, and they all, oddly enough, look good at 72 degrees @ 8 min.HP-5, APX 100, and Delta 100. Slow continuous leafing in a tray. Usually printed with a no.1 or no.2 filter. Never looks flat, by the time the selenium is applied. Just alot of real life tonality. My times however are always shorter that everyone's, and I'm pretty sure that's because I give considerable exposure for full shadow detail, and have strong highs to contend with, so I'm usually at the extreme of compensation. For normal, or plus development, I use Rodinal, or D76h. Your observation on 1:1:100 is consistent with Sandy King's suggestion, although he also mentioned that with 2:2:100 the develop time can be 20% shorter, and 1:1:200~250 would be for standing developement. I'll start with 80% of the develop time for PMK. > > Where can I find the development time for various films? particularly > > for Ilford FP+125, Panf 50, HP-400, and Agfa APX-100? [quoted text clipped - 22 lines] > compensation. For normal, or plus development, I use Rodinal, or > D76h. > Your observation on 1:1:100 is consistent with Sandy King's > suggestion, although he also mentioned that with 2:2:100 the develop > time can be 20% shorter, and 1:1:200~250 would be for standing > developement. > > I'll start with 80% of the develop time for PMK. Opps, sorry, a slight correction. I mix solution B at half strength so I can get the stuff to dissolve better, which means I'm doing the pyrocat at 1:1/2:100. It's so atomatic now, I forgot to adjust when telling you. > Opps, sorry, a slight correction. I mix solution B at half strength > so I can get the stuff to dissolve better, which means I'm doing the > pyrocat at 1:1/2:100. It's so atomatic now, I forgot to adjust when > telling you. AUTOMATIC, damn it. Just another testimony to the dissolution of attention span brought on by expendiancy. Don't know if this helps anybody (it's not one of the films asked for above), but I recently tested (120 size) Fuji Neopan 400 with PyrocatHD, and came to following conclusiones: EI 320, Pyrocat HD 1+1+100 at 21°C, 13 min. semi-stand development (agitate constantly for first minute, then once every 3 minutes...); got my basic info from Sandy King himself at photo.net (he is active there...). Roman Greatly appreaciated. I'll see how many I can collect with this thread. Please throw in your experience, no matter what films. Thanks. > Don't know if this helps anybody (it's not one of the films asked for > above), but I recently tested (120 size) Fuji Neopan 400 with [quoted text clipped - 4 lines] > > Roman newstein_einton@yahoo.com (Einton Newstein) wrote in message news:< > Your observation on 1:1:100 is consistent with Sandy King's > suggestion, although he also mentioned that with 2:2:100 the develop > time can be 20% shorter, and 1:1:200~250 would be for standing > developement. > > I'll start with 80% of the develop time for PMK. For stand or minimum agitation development with Pyrocat-HD, I have found that at 1:1:200 I get quite some loss of shadow detail (but fabulous sharpness). THere are several references to dilutions around 1:1:150, and that's what i'll try next. At 1:1:100 (standard dilution for silver printing) Pyrocat-HD is quite active. FWIW, I have found that Sandy's recommendation of 70% of PMK times not only a good starting point, but spot on (with HP5+ and Neopan400) |
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