Divided Developing With pyro

[jeffzeitlin]

I have searched the forums and I still have questions that someone maybe able to answer.
First - Anyone doing divided developing with pyro - I would like to know your experiences - especially if you are using TMY-2 for film?
Second - I understood that you can control the contrast by the amount of time - adsorption - in the Part B solution?
Third - anyone using DBI with divided developing?
Last - Is it applicable to use with alternative -Pt - printing?

 

[pgomena]

I've tried divided Pyrocat-HD with roll and sheet film with mixed results. The biggest bugaboo is uneven development in areas of similar tone (skies, beach sand, etc.). When it works, it works wonderfully. It takes some time and testing to get your agitation technique down. I've used it on Fuji Acros 120 roll film and Ilford FP4+ sheet film. It is a miracle cure for pulling shadow detail out of contrasty backlit situations. Highlights just stop dead in their tracks without blowing out, and there's plenty of contrast in the shadows. These negatives scan very well, and I'll stop talking digital right now.

I can't help you with your questions about alternative printing or DBI. Time in the "B" solution does affect overall contrast and density, but what's most likely to happen is you end up with a thin negative.

See this site for more information: http://www.pyrocat-hd.com/

Also see Sandy King's posts in this forum. He's the man.

Peter Gomena

 

[doughowk]

In my limited experience, the ideal negative for platinum/palladium printing has a DR of 1.85 to 2.0. Wouldn't divided development have the effect of reducing contrast and DR? If so, would think divided development having limited usage for pt/pd printing.

 

[brianmquinn]

This was made to be like a two bath PMK
http://www.photoformulary.com/Deskt...tabindex=2&categoryid=31&selection=0&langID=0
and
Dead Link Removed

 

[pgomena]

You probably won't get the DR you need for Pt/Pd prints from this technique. The negs tend to be thin and flat with a good, long tonal range. Scanners like those thin negs.

Peter Gomena

 

[sanking]

You probably won't get the DR you need for Pt/Pd prints from this technique. The negs tend to be thin and flat with a good, long tonal range. Scanners like those thin negs.

Peter Gomena

I believe Peter is correct. My own interest in divided Pyrocat is for highlight control when the negatives are to be scanned. With many films it would be very difficult to get a DR of 1.8 or higher with divided Pyrocat.

On the other hand, people have used some divided developers, D23 for example, for negatives intended for pt/pd printing. However, they are adjusting the strength of the solutions in one way or another for this purpose.

Sandy King