Rodinal stand development at low temperature (13 degrees celsius)

peterkinchington · Jun 7, 2018

Alan Johnson said:
https://web.archive.org/web/2006071...hotosite/technical/Filmbasics/filmbasics.html
Grain might be less fluffy at low temperatures.
See " A slight course...." paragraph 3. The lower temperature will cause less swelling of the gelatin.
2 cents on that explanation.

Thanks Alan an interesting article.
Cheers Peter

faberryman · Jun 7, 2018

I am not sure why the OP posted. He likes the results he gets with his method. Some will have the same experience and some will have a different experience. No consensus will be reached. I think OP should do whatever he feels gives him the best result.

peterkinchington · Jun 7, 2018

pdeeh said:
From now on, if I see a typical such thread I think I'll just post "IADF" and duck out.

Hi Pdeeh,
Regarding "inchoate acutance developer fetish" try Beutler developer with Tmax or PanF or Kodak or Konica BW infrared films (if you can find some) and I think you will see that the resulting prints from the negatives do indeed benefit from a high acutance developer (of course grain is more apparent in a high acutance developer than in a fine grain developer).
Infrared shots using Kodak high speed infrared and Konica infrared films developed in Beutler high acutance developer respectively - I wish you could see the prints on Grade 5 Agfa Paper (I could sell you them at a bourgeois price + postage),

Cheers Peter
NB what do you mean by inchoate 1 or 2
inchoate
ɪnˈkəʊeɪt,ˈɪnkəʊeɪt,ɪnˈkəʊət/
adjective
adjective: inchoate

just begun and so not fully formed or developed; rudimentary.
"a still inchoate democracy"
- confused or incoherent.
  "inchoate proletarian protest"
Law
(of an offence, such as incitement or conspiracy) anticipating or preparatory to a further criminal act.

peterkinchington · Jun 7, 2018

faberryman said:
I am not sure why the OP posted. He likes the results he gets with his method. Some will have the same experience and some will have a different experience. No consensus will be reached. I think OP should do whatever he feels gives him the best result.

Hi ferryman,
Spot on. I like the repartee.
Cheers Peter

Lachlan Young · Jun 7, 2018

pdeeh said:
From now on, if I see a typical such thread I think I'll just post "IADF" and duck out.

Pretty much! Saves the pain of reading endless threads theorising about grain behaviour with acutance developers when no controls of temperature etc are in place - never mind electron microscopy or microdensitometry...

Lachlan Young · Jun 7, 2018

peterkinchington said:
Infrared shots using Kodak high speed infrared and Konica infrared films developed in Beutler high acutance developer respectively - I wish you could see the prints on Grade 5 Agfa Paper

Grade 5 paper is going to have more to do with the appearance of apparent 'acutance' than specific developer choice, at least at non gigantic sizes (and with properly big prints, enlarging lens choice will have a bigger effect arguably than developer choice on apparent sharpness).

peterkinchington · Jun 7, 2018

Lachlan Young said:
Pretty much! Saves the pain of reading endless threads theorising about grain behaviour with acutance developers when no controls of temperature etc are in place - never mind electron microscopy or microdensitometry...

Hi Lachlan,
Low temperature development should be handy in Glasgow. The Young brothers of the Easybeats (Friday on my mind) and AC/DC migrated to Australia in the early 1960's to get away from the severe winters in Glasgow. As a retired scientist I enjoy not having to perform rigidly controlled tests in my photography and I enjoy looking subjectively at the results. What really counts to me is that I can reproduce my development procedures and get a consistent outcome.
Cheers Peter (Kanga)

faberryman · Jun 7, 2018

peterkinchington said:
As a retired scientist I enjoy not having to perform rigidly controlled tests in my photography and I enjoy looking subjectively at the results. What really counts to me is that I can reproduce my development procedures and get a consistent outcome.

How are you keeping your solution temperature at 13 degrees for two hours?

peterkinchington · Jun 7, 2018

Lachlan Young said:
Grade 5 paper is going to have more to do with the appearance of apparent 'acutance' than specific developer choice, at least at non gigantic sizes (and with properly big prints, enlarging lens choice will have a bigger effect arguably than developer choice on apparent sharpness).

Hi Lachlan,
Thanks for your thoughts. I used Grade 5 paper to compensate for the low contrast of the resulting negatives.
Cheers Peter

peterkinchington · Jun 7, 2018

faberryman said:
How are you keeping your solution temperature at 13 degrees for two hours?

Hi faberryman,
13C was the temperature in my unheated studio/darkroom. If I need to reproduce lower temperatures in summer I can use my waterbath and chiller.
Cheers Peter

Gerald C Koch · Jun 10, 2018

Billy Axeman said:
I don't know if this has been suggested before, but my theory is that a lower temperature implies less Brownean movement of the molecules in the solution, so it is largely equivalent to less agitation.

This would would only work is the halide chrystals were free to move about however they are fixed in the emulsion. Therefore changing the temperature has no effect.

Billy Axeman · Jun 10, 2018

Gerald C Koch said:
This would would only work is the halide chrystals were free to move about however they are fixed in the emulsion. Therefore changing the temperature has no effect.

I mean the molecules in the developer, not in the film. Molecules in the developer are moved around by flipping the tank, know as 'agitation' but the molecules have also a Brownean movement which is temperature dependent.
So you have macro movement, micro movement and an intermediate approach is agitation by vibration.
Just thinking out loud.

Rodinal stand development at low temperature (13 degrees celsius)

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