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Thread: Agfa-47

  1. #1

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    Agfa-47

    Hello

    Old and forgotten developer from Agfa

    Metol 1.5g
    Sodium Sulfite 45g
    Sodium Metabisulfite 1g
    Hydroquinone 3g
    Sodium Carbonate 5g
    Potassium Bromide 0.8g
    Water 1l
    pH=9.6

    Have ~1.5x more speed than D-76. Starting dev.time 5-6min. Produce negatives with normal contrast and great sharpness.

    Kodak Double-X @250 in Agfa-47 5min









    Ilford Surveillance P3 200 @200 Agfa-47 5min


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    Rudeofus's Avatar
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    I wouldn't call myself an expert on MQ developers but from looking at its formula there is nothing that suggests it would gain 1.5 stops over D-76. Care to explain how a developer that looks like a mixture of D-76 and D-25 can give so much higher emulsion speed?
    Trying to be the best of whatever I am, even if what I am is no good.

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    AgX
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    Relayer stated to have 1.5 times more speed. That does not mean 1.5 stops more.

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    Hi Rudeofus:

    This Agfa formula goes in the opposite direction of D-25 in terms of activity. Compared with D-76 it operates at a significantly higher pH. Given it has a high pH and half the sulfite of D-76 one would expect grainier results relative to D-76.

    When Relayer says 1.5x speed I assume it to mean 1/2 stop.

    In Anchell it is listed as Ansco 47 and is described as giving somewhat higher than normal contrast, good for use under low contrast or controlled lighting conditions.
    Last edited by Michael R 1974; 06-19-2013 at 08:49 PM. Click to view previous post history. Reason: Clarity

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    1.5x more speed = Agfa-47 need 1.5 times less time than D-76 for developing film to same ISO. In case Kodak Double-X @250 - 7.5min in D-76 and 5min in Agfa-47. I guess that 7.5min in Agfa-47 will be good for 400 ISO, but contrast may be very high and not acceptable - I can't test this combination.

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    Quote Originally Posted by Michael R 1974 View Post
    In Anchell it is listed as Ansco 47 and is described as giving somewhat higher than normal contrast, good for use under low contrast or controlled lighting conditions.
    Yes, negatives look like slightly more contrast than usually I have. Probably decreasing amount of Hydroquinone to 1.5-2g/l will decrease contrast.

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    Hello,
    this is not the formula for AGFA 47, ANSCO 47 may be correct. The original AGFA 47 is an amidol developer.

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    Quote Originally Posted by jochen View Post
    this is not the formula for AGFA 47, ANSCO 47 may be correct. The original AGFA 47 is an amidol developer.
    I found formula here: http://www.digitaltruth.com/data/agfa_ansco_47.php
    But in some books I found that Agfa-47=OWRO-47 is amidol print developer. I think this isn't correct because in Agfa Formulas from 1938 this formula listed as Agfa-47. But ORWO-47 is amidol developer
    Last edited by Relayer; 06-21-2013 at 05:29 AM. Click to view previous post history.

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    Hello,
    my AGFA book about "Photochemikalien" has been written in 1952 by E. Schloemann and in this book AGFA 47 is an amidol developer.

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    Quote Originally Posted by jochen View Post
    Hello,
    my AGFA book about "Photochemikalien" has been written in 1952 by E. Schloemann and in this book AGFA 47 is an amidol developer.
    In 1952 the East German (DDR) company VEB Filmfabrik Wolfen was still using the Agfa trademark, as was the West German Agfa company. (Wolfen changed to the Orwo trademark around 1964). So is this a case of the East and West "Agfa" companies using a different numbering system?

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