Bob Carnie said:Sandy, I have rambled on , and to answer your question , bluntly I do not know why I am using a higher filter for pyro negs over d76 negs , just that when I am making prints this is always the case. I would love to have a conversation with Mr Hutchings on this and talk to him about our methods and see if they match his as I have ran a lot of pyro in this shop and through daily experience I have noticed certain differences between pyro and d76.
Bob Carnie said:Hi Sandy
Your suggestion of extended development to produce a negative of a paticular contrast to produce a print of grade 1 1/2 is very valid , I just don't know how to do this with my experience of how Mr Huchings formual works with a Jobo processor.
One thought would be to increase agitation , and or developer temp, but to this date I have been happy increasing the filter grade.
Your thoughts would be appreciated
Ronald Moravec said:If you have developed any properly exposed film with any developer to the proper contrast, they all print the same with very close times.
Bob Carnie said:right now I am doing a 14 minute development for trix based on 200ISO,
my fear is that anything over 16minutes I may not see any difference. I am using two 1litre mixtures of chemicals split into 7 minutes for each on the Jobo. and my worry is that over 16 minutes I have exhausted the useful developer.When I started with Pyro I found that 1 litre was exhausted too quickly and resulted with underdeveloped negatives, therefore the split 1litre system I use.
Bob Carnie said:Hi Sandy
To say it does not work , to me is not valid as I have processed a lot of film with this method as well I have printed many shows over the years with this film. The prints that I have made are by my humble estimation good enough to hang, I have seen many others work in gallerys over the years and feel confident enough to use this film developer combination. I do promise to try pyrocat face to face with Mr Hutchings formula and I will make side by side prints to compare.
Bob Carnie said:Kirk
We are using two Alt2300 . the problem is that the chemistry is pumped automatically by the processors.
Do you think if we took off the tank after the pre soak. then manually pump in nitrogen , then put the tank on the machine and start the developing stage, we would in effect mimic what you are doing.
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