@Alex Benjamin: there is another thread on this subject:
Robert Adams' roll film developing technique
I was reading an essay by Todd Papgeorge on Robert Adams, and came across this explanation of his film developing technique for "The New West": http://www.americansuburbx.com/2011/07/robert-adams-missing-criticism-what-we.html It involved the use of shallow custom-made trays and required...www.photrio.com
Quoting from it:
"It involved the use of shallow custom-made trays and required that Adams make a loop of a single roll of film by taping its ends together and then manipulating it through several trays of photographic chemistry, all in pitch blackness. This procedure, requiring thirty-five to forty minutes start to finish"
I do wish the subject of agitation and its effects would be discussed more in depth.
Now, it has moved to the small scale user
It sounds like Adams used a standard professional lab deep tank probably full of D-76 and instead of having the film on a spiral he joined the ends together. I think the reference to a 'tank' is confusion about a developing tank like a Paterson tank.
Robert Adams, not Ansel.
@Alex Benjamin: there is another thread on this subject:
Robert Adams' roll film developing technique
I was reading an essay by Todd Papgeorge on Robert Adams, and came across this explanation of his film developing technique for "The New West": http://www.americansuburbx.com/2011/07/robert-adams-missing-criticism-what-we.html It involved the use of shallow custom-made trays and required...www.photrio.com
Quoting from it:
"It involved the use of shallow custom-made trays and required that Adams make a loop of a single roll of film by taping its ends together and then manipulating it through several trays of photographic chemistry, all in pitch blackness. This procedure, requiring thirty-five to forty minutes start to finish"
Short answer: with anything other than litho materials in highly specific situations (and even then), anything more than standstill/ nil agitation (which will be hideously uneven) will essentially only affect overall contrast - however people bend themselves into all sorts of strange shapes over struggling to deal with implementing basic time/ temp/ consistent agitation procedures within an alarmingly large set of error bars, instead opting for obsessive defensiveness of strange old agitation procedures that were researched extremely thoroughly by the major manufacturers and essentially found irrelevant by the 50s/ 60s - and rapidly overtaken by modern emulsions that are designed to exploit developer solvency (and other characteristics) to improve sharpness. Rheologically problematic development vessels/ reels/ hangers etc are more of an issue than agitation, if you are giving sufficient agitation to get truly even development. Insufficient, excessively gentle agitation and reels/ tanks with questionable flow patterns are the real problems.
Thanks I hadn't realised he had a brother
pentaxuser
It seems quite obvious that he was running into what are not unknown issues with stainless steel reels under certain use-case-scenarios.
Is there something wrong with using stainless steel reels? I have been using them for a long time without incident. Maybe I have a problem I don't know about. Or maybe I have just been lucky. To be honest, I read a lot of these threads and wonder WTF people are doing to encounter all these issues because it pretty much seems like developing film is a dead simple process.
Wonder what they'd make of the deep tank cages designed to take Paterson reels.
Very nice, but totally impractical for my purposes. And I'd wonder what mechanism they use for moving exhausted developer away from the film.
I believe commercial dip and dunk tanks use nitrogen burst or whatever for agitation. Maybe if you are using big tanks in your home darkroom you could stick a straw in the developer and blow bubbles. Then we could have a thread about what is the best straw to use.
I believe commercial dip and dunk tanks use nitrogen burst or whatever for agitation. Maybe if you are using big tanks in your home darkroom you could stick a straw in the developer and blow bubbles. Then we could have a thread about what is the best straw to use.
Is there something wrong with using stainless steel reels? I have been using them for a long time without incident. Maybe I have a problem I don't know about. Or maybe I have just been lucky.
To be honest, I read a lot of these threads and wonder WTF people are doing to encounter all these issues because it pretty much seems like developing film is a dead simple process. Of course, like most things, you can make it as difficult as you want to.
"Accurate management of time and temperature", and "consistent, effective agitation"
And I'd wonder what mechanism they use for moving exhausted developer away from the film.
I find myself in agreement, except I still use the plastic reels. In my favor, I do have a modest background in science, so the idea of a consistent, repeatable process with as many variables as possible being controlled (or eliminated), isn't alien to me.
I think I simplified Lachlan's comments down to "Accurate management of time and temperature", and "consistent, effective agitation" as the two key factors for film development, which is exactly what I tend to obsess over. It's possible I oversimplified, though.
Very nice, but totally impractical for my purposes. And I'd wonder what mechanism they use for moving exhausted developer away from the film.
I believe commercial dip and dunk tanks use nitrogen burst or whatever for agitation. Maybe if you are using big tanks in your home darkroom you could stick a straw in the developer and blow bubbles. Then we could have a thread about what is the best straw to use.
Stainless steel straw or plastic straw? Makes a difference, you know…..
Interesting, a see saw motion in the tray, flip, and repeat. The film is moving in the liquid rather the liquid moving around the film. Kind of makes sense regarding evenness.
What I do is unroll the film, remove the paper backing, and make a loop of the film, emulsion side out, by binding the end together using the tape that previously held the film to the backing. Then I place the film in the developer (I prefer undiluted Microdol or D76 or Acufine, replenished). During the first 20 seconds I lift first one end of the loop out and then the other, again and again. For the remaining developing time I follow a pattern: at the end of thirty seconds I lift one end of the loop out of the developer and immediately set it back down, after which the film is left motionless in the tank; after another thirty seconds I lift up and set back the other end of the loop; after another thirty seconds I lift the whole loop out and turn it over so that the other edge of the film rests on the bottom of the tank. That one-and-a-half minute cycle is repeated. It's a method I learned from Myron Wood, to whom I'm grateful.
Is it worth it? I think so because I don't see virtue in streaked or mottled skies. That isn't the way the real sky looks."
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