ILFORD HP5 overexposed: how to get a correct development?

Discussion in 'Darkroom Developing and Printing' started by luca, Nov 12, 2003.

  1. luca

    luca Guest

    Hi to everyone,

    Due to an overlighting during the shooting, i ask if someone can suggest
    me the correct timing to develope the film:
    I use Rodinal, 1+25 20 degree. The correct time for a right exposed film
    should be 10 min: should I reduce it? And how much should I reduce it?
    Thanx in advance to everyone that can answer this question.
    luca, Nov 12, 2003
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  2. luca

    Jopo75 Guest

    Quanta sovraesposizione hai??
    Il Rodinal mantiene bene la sensibilità nominale, per cui puoi calcolare un
    15% di tempo in meno per ogni stop di sovraesposizione (molto dipende anche
    dal tuo "stile" di agitazione, per cui potresti anche calcolare un 20% in
    Se il tempo si fa troppo breve, calcola che puoi anche ridurre la
    temperatura (un 10% per ogni grado centigrado di calo).
    Spero di esserti stato d'aiuto.
    Jopo75, Nov 12, 2003
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  3. Subject: ILFORD HP5 overexposed: how to get a correct development?
    At what speed was the film shot at?

    Bob McCarthy
    TheYankeeSnapper, Nov 13, 2003
  4. Well, by how many stops did you overexpose? If by 1/2 stop, then you have a
    'not to worry'. If by 5 or more stops, you have a most interesting
    challenge on your hands.

    recommendation...grabl another roll/sheet of HP5 and overexpose for the same
    number of stops. Then experiment, cutting down on the development time in 1
    minute increments. Apply the time you like to the rolls/sheets in question.
    Lawrence Akutagawa, Nov 13, 2003
  5. luca

    Mike King Guest

    Just as over developing film does not really increase film speed, shortening
    developing times does not reduce film speed. You can use developers like
    Microdol-X or Perceptol to effectively decrease your EI by half. EI200. And
    HP 5 prints nicely at one or two stops overexposed (exposure times get
    longer but you'll have awesome shadow detail) so now you're at EI50. How
    much more do you need?
    Mike King, Nov 13, 2003
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