Diafine 2 bath BW film developer

Discussion in 'The Darkroom' started by ksmattfish, Sep 15, 2004.

  1. ksmattfish
    Offline

    ksmattfish Now 100% DC - not as cool as I once was, but still

    Joined:
    Aug 25, 2003
    Messages:
    7,021
    Likes Received:
    31
    Trophy Points:
    0
    Location:
    Lawrence, KS
    Gallery:
    Ratings:
    +31 / 0
    My Photos Are NOT OK to Edit
    I've now shot 8 rolls of Tri-X 35mm, and developed it in Accufine's Diafine 2 bath developer. I think I like this stuff a lot!

    It gives a 1 stop push in film speed to most regular BW films (it only gives a 1/3 to 2/3 push to tabular grain films), but it gives a 1.5 to 2 stop push to Tri-X (ISO 1250 to 1600) without really looking like it was pushed.

    It deals with contrasty lighting very well. 2 bath developers sort of develop to the proper contrast automatically.

    And it's super easy to use. You don't have to worry about temp too much; just make sure all the chems are about the same, but it doesn't have to be at 68 degrees (F). No pre-wet. Pour in solution A. Invert your tank twice every minute for 3 min. Pour solution A back into it's jug. Pour in solution B. Invert your tank twice every minute for 3 min. Pour solution B back into it's jug. Rinse with water for 30 sec, and then fix and wash as usual.

    The capacity is near infinite. It doesn't wear out. Eventually you have to buy more because you are slowly losing a bit of chemistry every time you use it, but it can sit on your shelf in a sealed jug for years and still be good. In fact, some people claim it gets better 6 months after it was mixed.

    The only disadvantage that I can see with it is that it doesn't allow for development changes such as increased agitation, temp, concentration etc... There is only one film speed/contrast/tonal range (depending on film type) available.

    I'll scan some of the negs and post them tonight in the 'Photo Gallery'.
  2. terri
    Offline

    terri Administrator Staff Member

    Joined:
    Sep 2, 2003
    Messages:
    23,280
    Likes Received:
    1,473
    Trophy Points:
    113
    Location:
    In the mental ward of this forum
    Gallery:
    Ratings:
    +1,483 / 1
    My Photos Are NOT OK to Edit
    Great! I want to see!! :D

    I'm still trying to accept that you can let this stuff sit and sit like you just described, and not have it deteriorate in a matter of months....sounds fantastic!
  3. Soulreaver
    Offline

    Soulreaver New Member

    Joined:
    Feb 12, 2004
    Messages:
    128
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    Sao Paulo, Brasil
    Gallery:
    Ratings:
    +1 / 0
    That is really interesting.A developper that doesn't push film based on temp/time/... but varies instead on film type.never heard of that.
    Can be a time saver for a N+1,N+2 dev.
    Yesterday and a bit of today I did a N+1 dev that took 13min for each roll :( (I only got 1 reel/tank )
    And developing is boring ... as opposed to printing.
  4. oriecat
    Offline

    oriecat work in progress

    Joined:
    Jul 7, 2003
    Messages:
    3,118
    Likes Received:
    18
    Trophy Points:
    0
    Location:
    Portland OR USA
    Gallery:
    Ratings:
    +18 / 0
    Yeah, based on my previous disaster with developer dying, that sounds like something I could really get into!
  5. ksmattfish
    Offline

    ksmattfish Now 100% DC - not as cool as I once was, but still

    Joined:
    Aug 25, 2003
    Messages:
    7,021
    Likes Received:
    31
    Trophy Points:
    0
    Location:
    Lawrence, KS
    Gallery:
    Ratings:
    +31 / 0
    My Photos Are NOT OK to Edit
    One bath developers contain the developer and the activator in one liquid, and both are used at the same time. So the film/paper is constantly developing; as some of it exhausts, fresher stuff replaces it (assuming a bit of agitation).

    With a two bath developer, the first bath is the developer, and it soaks into the emulsion. Then you remove most of the excess developer that hasn't soaked in to the emulsion. When you put it in the activator, the developer starts doing it's thing, but it can't go past the point in which it has been exhausted. This is also why the contrast is low. The places on the film that use up the developer faster just stop developing, or at least slow down significantly.

Share This Page

Search tags for this page
2-bath developers forum
,
2 bath film developers for 35mm
,
2 bath film developer
,
bathbw no brasil
,
buy diafine b&w film developer
,
diafine 2 bath developer
,
diafine 2 bath film developer
,
diafine capacity
,

diafine developer

,

diafine film developer

,
diafine film speed
,
diafine two-bath film developer
,
diafine two-bth developer
,
diafine working capacity
,
diaphine and tri x
,
is film activator the same as film developer
,
tri x diaphine
,
two-bath film developer