How should I develop my Rolei ATP 1.1 120 film?

Discussion in 'B&W: Film, Paper, Chemistry' started by Graham06, Aug 14, 2009.

  1. Graham06

    Graham06 Subscriber

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    I bought a box of 12 120 rolls and a ATP14DC test kit. If I followed the instructions, 140ml would develop 7 films (20ml each making 250ml of working solution)

    Problem is I have 10 films, not 7 (gave 2 away) and my developing tank needs 500ml to cover a 120 film spiral. What should I do?

    a) dilute the solution to 500ml and develop longer? (how much longer?)
    b) develop the first 6 rolls in pairs, using 40 ml of solution twice
    c) develop the first 9 rolls in sets of three, using 40 ml of solution 3 times
    d) develop 3 roll using 40 ml each and use another developer for the rest.
    e) other. (expand)

    if d), what would be a good choice? I have hc110, pyrocat hd, diafine (and some ancient dektol) Really dilute hc-110 or pyrocat-hd might be worth trying on a few rolls just to see what happens.

    I saw a thread where someone tried a normal developer and kept getting solarisation effects in the highlights 'cos the film apparently doesn't like being over exposed at all.

    Thanks,
     
  2. PBrooks

    PBrooks Member

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    I have been using it exposed a 25 in Rodinal 1:300 at 20c. for 12 min. 20 sec initial and then 4 inversions every minute. 1/2 strength fix and even less photoflo.
    hope this helps
    PBrooks
     
  3. Graham06

    Graham06 Subscriber

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    I exposed my first roll at Iso 25. I think I'm going to dilute the DC developer enough to cover the film and develop a little longer. Later I will see what I can do with HC-110H
     
  4. surfotog

    surfotog Member

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    I'm about to start experimenting with different developers with this film myself. From what I've read it behaves very much like the old Kodak tech pan in terms of development. At the Unblnkingeye.com, there are suggestions for development in Diafine, which I plan to try. Not long ago Sandy King posted a procedure for developing in divided Pyrocat HD, that sounds like it would be worth trying with ATP.
     
  5. Graham06

    Graham06 Subscriber

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    Ooh, I'll try Diafine then. My guess was that it would have ended up way too contrasty. I'll post results of what I try when I get round to developing my film.
     
  6. Graham06

    Graham06 Subscriber

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    I meant D-76
     
  7. surfotog

    surfotog Member

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    Graham, The idea of developing ATP in Diafine is to either dilute solution A, or reduce the time in solution B. See unblinklingeye for details.
     
  8. Graham06

    Graham06 Subscriber

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    Looking to the page you mention, I found these pages that are relevant:

    "diafine 3mins + <45s. HC-110-F:"
    http://www.digitaltruth.com/devchart.php?Film=Technical+Pan&Developer=&mdc=Search

    "TD-3 from the photographer's formulary":
    http://www.flickr.com/groups/ishootfilm/discuss/72157613305186763/

    Developing tech pan:
    http://unblinkingeye.com/Articles/Times/TechPan/techpan.html

    ATP compares with Kodak TP, 1+300 rodinal:
    http://www.digitaltruth.com/products/product_tests/atp_film_002.php
    (ATP is more contrasty than TP)

    some rodinal and Spur DC examples. suggest Technidol with 30 s less development:
    http://photo.net/black-and-white-photo-film-processing-forum/00TSGU