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  1. #1

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    D76H - Stock or 1:1 ?

    Hi everyone,

    Lately I've been making D76H from raw chemicals and have been using the stock solution for my films. The results have been very good, but am I missing out on sharpness and tonality by not using it at the 1:1 ratio? If so, is the difference that great?

    If it matters I'm using Agfa APX100.

    Thanks.

  2. #2

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    Not so much that you'd notice with modest enlargements. After that you might, and it becomes a choice of more sharply defined and noticeable grain over less. Only you can make that call, 'cause only you know what looks good to you.
    Frank Schifano

  3. #3
    Photo Engineer's Avatar
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    Kodak's internal standard for all measurments of B&W products was D-76 stock. That is the recommended standard.

    PE

  4. #4

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    Quote Originally Posted by Stew View Post
    Lately I've been making D76H from raw chemicals
    and have been using the stock solution for my films.
    If it matters I'm using Agfa APX100.
    D76H, minus that pinch of borax a D-23 with 33% of
    the metol but 100% of the sulfite. For capacity it is
    likely the most sulfite loaded of ANY developer. Is it
    used one-shot? Dan

  5. #5
    Bruce Osgood's Avatar
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    I've been using the D-76H formula found in the APUG files 1+1 with the times and temperatures Kodak offers for their D-76. I use the dilute one shot in a Jobo. The stock solution seems to keep a long time.

    Distilled Water 750 mL
    Metol 2.50 g
    Sodium Sulfite 100.00 g
    Borax 2.00 g
    Tap water to 1000 mL

    I wouldn't change a thing.

  6. #6
    PhotoJim's Avatar
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    Try it. That's the best answer.

    You will get better sharpness and acutance (and higher grain; they go together). Whether it's a good tradeoff is up to you.

    Shoot a roll on some subjects, and shoot an identical roll. Develop each, one stock, one 1:1, and see.
    Jim MacKenzie - Regina, Saskatchewan, Canada

    A bunch of Nikons; Feds, Zorkis and a Kiev; Pentax 67-II (inherited from my deceased father-in-law); Bronica SQ-A; and a nice Shen Hao 4x5 field camera with 3 decent lenses that needs to be taken outside more. Oh, and as of mid-2012, one of those bodies we don't talk about here.

    Favourite film: do I need to pick only one?

  7. #7

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    Quote Originally Posted by Bruce Osgood View Post
    The stock solution seems to keep a long time.

    Distilled Water 750 mL
    Metol 2.50 g
    Sodium Sulfite 100.00 g
    Borax 2.00 g
    Tap water to 1000 mL

    I wouldn't change a thing.
    Keeps a long time? I'd guess so as it is not much
    more than a bottle of sodium sulfite solution.

    A variation might be 7.5 grams metol + 100 grams
    of sodium sulfite + perhaps 6 grams of borax.
    A low sulfite D-76H.

    Skip the borax. Make that 8 grams of metol and
    80 grams of sodium sulfite and you've my formula
    D-23. I use it 1:7, 500m, each 120 roll. Dan

  8. #8
    23mjm's Avatar
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    I prefer 1:1 it has longer development times----helps make my development more constant. Small time differences in processing are less of a % of the total time if it's a longer development time. It may not make much difference but makes me feel better plus the soup goes further!!!

  9. #9
    Uncle Bill's Avatar
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    I am a fan of the 1+1 ratio and I don't mind the slight increase in grain.
    "Life moves pretty fast, if you don't stop and look around once and a while, you might just miss it."
    Ferris Bueller

  10. #10

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    I'm Reminded

    Quote Originally Posted by dancqu View Post
    g
    I use it 1:7, 500m, each 120 roll. Dan
    That above should read '500ml'. Minor matter
    but I am reminded: What are the solution volumes
    used. Some use this dilution, some that, but many
    never bother to mention the amount. The amount
    may vary considerabley; as little as 250ml for
    35mm or even less with rotary and up to a
    litter for stand development. Dan

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