Anybody using Pyrocat-HD or MC as a Compensating Developer?

[Jay DeFehr]

Sandy,

everything you write above makes sense. I'm sure my workflow differs from yours in many ways, because I use a lot of VC papers and roll films in addition to LF sheet films, and I don't scan for printing. For me, it would be convenient to use two degrees of development; one for low to normal contrast scenes, and another for normal to high contrast scenes. I think the simplest way to do this is to use a concentrated A solution with less than full absorption time for normal to high contrast scenes, and full absorption time for low to normal contrast scenes. This would allow me to use the same A solution for all my negatives, regardless of their development requirements, and simply leave some in the A solution longer than others. I've been getting good results with a single (short) development time for all my negatives, but I think there's room for improvement, especially in the extremes. Maybe I'll try using a 1:15 dilution with 2-3 minutes for N-high contrast scenes, and 5- 6 minutes for N-low contrast scenes.

[Ken Lee]

Dusk
Sinar P, 300mm Fujinon A
5x7 HP5+, Divided Pyrocat HD

[mdm]

Ken, please may I borrow your window washer? I am happy to cover shipping.

David

Dusk
Sinar P, 300mm Fujinon A
5x7 HP5+, Divided Pyrocat HD

[mgeiss]

I'm going to try divided Pyrocat-HD anytime soon. Will it matter whether I use water- or glycol-based stock solutions? I'm asking because in a 1:10 dilution there would be quite an amount of glycol in the working solution. Would this have any effect on development?

[Jay Decker]

I'm going to try divided Pyrocat-HD anytime soon. Will it matter whether I use water- or glycol-based stock solutions? I'm asking because in a 1:10 dilution there would be quite an amount of glycol in the working solution. Would this have any effect on development?

I have used the HD (water) and the MC (glycol) versions many times and obtained consistently good results with both.

[mgeiss]

Thanks, Jay! So I'll use my existing glycol-based HD solutions for the first tries and mix some larger amounts with water when it's been used up.

[gmfotografie]

hi my friends, i'm new to pyrocat developer with acros 4x5.

for development in an jobo 2523 i have to do following:

form http://www.pyrocat-hd.com/html/mixing.html#divided :

Water bath pre-soak for five minutes.
Six minutes* in Part A, with two inversions at the beginning, and two inversions at the 1/4, 1/2 and 3/4 points of development.
Pour our Solution A and pour in Solution B. No rinse between.
Five minutes* in Solution B.
Negatives must be fully immersed in Solution B and agitated vigorously for at least one full minute. Failure to do so, can result in uneven development. Two or three inversions at the 1/4, 1/2 and 3/4 points of development.
Pour out B, pour in water and leave for five minutes.
* Increase by approximately 15% for tray or tank agitation.

so i have to add 15% of time because i use the jobo tank with manual agitation, correct?!

for further film testing i assume to do film testing with the stouffer step tablet finding the right development time for n-1 n-2 and so on.....is this right?


best mh

[sanking]

hi my friends, i'm new to pyrocat developer with acros 4x5.

for development in an jobo 2523 i have to do following:

form http://www.pyrocat-hd.com/html/mixing.html#divided :

Water bath pre-soak for five minutes.
Six minutes* in Part A, with two inversions at the beginning, and two inversions at the 1/4, 1/2 and 3/4 points of development.
Pour our Solution A and pour in Solution B. No rinse between.
Five minutes* in Solution B.
Negatives must be fully immersed in Solution B and agitated vigorously for at least one full minute. Failure to do so, can result in uneven development. Two or three inversions at the 1/4, 1/2 and 3/4 points of development.
Pour out B, pour in water and leave for five minutes.
* Increase by approximately 15% for tray or tank agitation.

so i have to add 15% of time because i use the jobo tank with manual agitation, correct?!

for further film testing i assume to do film testing with the stouffer step tablet finding the right development time for n-1 n-2 and so on.....is this right?


best mh

For the use of divided Pyrocat with development in Jobo I would use a 1:15 dilution of both Solution A and B, at 75º F, and develop 4 minutes in each solution. The problem you may have is that you will get uneven development unless you are able to wet the film out with developer in Solution B completely at once. This may be difficult with some Jobo tanks.

Sandy

[Peter De Smidt]

I've used divided Pyrocat in a Jobo with success, but it was awhile ago. I'll see if I can dig up the particulars.

[gmfotografie]

i have ordered the Jobo 3010 expert drum and a beseler motor roller base for developing
can you suggest me the pyrocat hd for this drum?

(as i'm in europe i can only import from usa the rollo pyro or pyrocat m with high shipping costs )

thx