Semi-stand in Pyrocat HD?

[David A. Goldfarb]

Threads merged, title updated.

 

[ame01999]

Thank you for the relocation. I'd read the original thread, and though one user mentioned increasing agitation intervals, the rest of the thread was devoted to the recommended 3 minute intervals. And pork and turkey.

 

[Ian Grant]

And pork and turkey.

I east both

More seriously too little agitation causes streaking, bromide drag.

I find Pyrocat has very good catutance and micro-contrast with normal agitation, I've used less agitation and it doesn't increase by that much (but I done it by accident -not palnned).

I could give you formulae that will give far higher acutance/edge effects but at the sacrifice of micro-contrast and very fine deail, and with a slight increase in grain. But look at the se prints from a medium distance they look razor sharp go up close and the effect's gone because the fine deatails lost.

Ian

 

[Willie Jan]

I did a test last weekend with a hassy.

(A) First roll developed 'normal' as I do it always.
pyrocat-HD 1:1:100, 20 degree celcius. for 12 minutes.
first min continious, after that 1x each 30 seconds.

Second roll.
(B) pyrocat-HD 1:1:100, 22 degree celcius. for 15 minutes
first min continious, after that 10 seconds at 4,8 and 12 minutes.

Conclusion (prints are 24cm x 24cm):
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Both prints are printed at their best. Print (A) is printed at grade 2.5. Print (B) at grade 2. (A) is a little softer.

-General impression of both prints from 1 meter is equal.
-Shadow separation is equal
-middle tone separation in the tree looks a little brighter for (B). But is almost unnoticable. Maybe i want to see something here...

So for me the method used for roll B is not different than the one I use with much more agitation.

Remark:
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I would have expected that the max density of the negative (clouds) would be somethat less dense because of the decreese in agitation, but it looks that with the 1:1 dilution there is enough developer to overcome the 4 minutes between two agitation points.