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Thread: Pre-soak for manual 4x5 B&W development in a Jobo tank?

  1. #11

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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    i dont jobo, i use tray dev but find presoaking very necessary. my arista film has a green antihalation coating on the back that is water soluable. i like to give a 3 min presoak which gets all the coating off before i go into my dev. i normally get 6 sheets per dev batch, if i dont wash, ill only get 4 sheets.

    berger 400 data sheet says a presoak is required. follow the instructions for the film manufacture recomendations.

    for medium format, none of my films ever need presoaking.

  2. #12

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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    Quote Originally Posted by Paul Ron View Post
    i dont jobo, i use tray dev but find presoaking very necessary. my arista film has a green antihalation coating on the back that is water soluable. i like to give a 3 min presoak which gets all the coating off before i go into my dev.
    The antihalation dye has no influence on the development process whatsoever.

  3. #13
    Peter De Smidt's Avatar
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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    To add to what Koraks said, Ilford recommends against a pre-soak. See: https://www.ilfordphoto.com/amfile/f...3/product/695/ where they say on page 3 "A pre-rinse is not recommended as it can lead to uneven processing."
    “You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
    ― Alexander Den Heijer, Nothing you don't already know

  4. #14
    おせわに なります! Andrew O'Neill's Avatar
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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    I never pre-soak. I use Pyrocat-HD.

  5. #15
    Steven Ruttenberg's Avatar
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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    I use a pre-soak for b/w, hasn't hurt anything. For slide3 film and color negatives the instructions for the kits I use say to presoak at temperature as first step.

    I think it is really just what you prefer. I have done it both ways and either way it works. I just prefer to pre-soak at development temps.

  6. #16

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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    Next batch of LF FP-4 in Pyrocat? I'm not gonna presoak! First time ever!

  7. #17
    Vaughn's Avatar
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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    I presoak in the Expert 3006 and 3005 drums. Brings everything up to temp and gets things going while I mix the developer (Ilford PQ Universal or PyrocatHD). And I love seeing the different colors of anti-halation coatings. Kodak Copy Film is a lovely red.

    I'll be tray developing some 11x14 this evening (FP4+ in PyrocatHD). I'll probably skip the presoak -- one less tray to worry about in a confined space. I wonder if I should develop the way I develop pt prints. Put the 11x14 negative in the tray, emulsion up, and pour on the developer. Does not sound fun in the dark, tho. Nah -- the images are very busy forest scenes...I'll just plop them into the developer.
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

  8. #18
    Steven Ruttenberg's Avatar
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    Re: Pre-soak for manual 4x5 B&W development in a Jobo tank?

    Soon, I will try my hand at tray development. Getting an expert drum for my color work since you can do 10 at a time and there is really no variability in different development times.

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