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  1. #1

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    A few questions about Rodinal/Adonal

    Hi,

    I have been exclusively using HC-110 in the past. But recently I'd like to try Rodinal/Adonal for my Agfa APX 100 films. I have several questions about this developer:

    . What is the minimal amount of Rodinal for a 135 36exp roll of film? I found online some number like 3ml. Would like to confirm the number.

    . Has anyone tried non-standard (1:25, 1:50, 1:100) dilutions? Specifically I'd like to use 1:63 (similar to HC-110 Dil H because my measure cup has 7.5ml mark and my stainless steel tank is 480ml). But I do not know how much time would be needed for this dilution.

    . What is the impact of temperature? Specifically how much time is needed for 21 C - 24 C?

    Thanks for any information!

    Jimmy

  2. #2
    Ken Nadvornick's Avatar
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    I believe the original Agfa recommendation for Rodinal was 10ml per 135-36 roll (or about 80 square inches). A large number of users seem to do just fine at 5ml/80sqi. And some have whittled that down to 3ml/80sqi.

    Keep in mind that those minimums must exist in a volume of water as a dilution ratio that works for your processing needs and equipment.

    Worth noting as well is that at the current Freestyle price of US$13.99 for a 500ml bottle, using the Agfa recommendation results in a cost per roll for 135-36 of only 28 cents each. Some will try to economize by using less, but for the life of me I can't see why.

    Ken
    "They are the proof that something was there and no longer is. Like a stain. And the stillness of them is boggling. You can turn away but when you come back they’ll still be there looking at you."

    — Diane Arbus, March 15, 1971, in response to a request for a brief statement about photographs

  3. #3
    Dr Croubie's Avatar
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    Straight from here, minimum is 5ml per roll.

    I've only ever used rodinal at 1+100 stand (or semistand, max 3 agitations in an hour.), so far on APX100 and PanF50, but mostly on Rollei Retro 100 (I scored a 100' roll cheap). So that's only 3+300ml per 135, and 5+500 per 120 roll, never had any problems with it becoming 'globally exhausted', but then that's the point of 1-hour stand, in that it becomes 'locally exhausted' and doesn't blow your highlights.
    Of course, even using proper agitate-every-minute, it'll depend on how much of each frame is light or dark as to how much it gets used up.

    5ml/roll sounds a bit like a 'best before' date on food: it's there to protect the manufacturer from whingeing customers, not to protect the consumer, so it's probably very conservative.

    How much film have you got? As always, start by following the manufacturer's recommendations and then you can play around. You can get away with using less, but it's probably the cheapest thing out there so there's no point in saving money with less dilutions, only do it to change the effect on the photos.
    An awful lot of electrons were terribly inconvenienced in the making of this post.

    f/64 and be there.

  4. #4

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    I photograph things to see what things look like photographed.
    - Garry Winogrand

  5. #5
    Ken Nadvornick's Avatar
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    Quote Originally Posted by Dr Croubie View Post
    Straight from here, minimum is 5ml per roll.
    Yes, I am aware of that. But I believe the original Agfa minimum recommendation was 10ml/80sqi. That may have indeed been conservative. But at only 28 cents per roll I'm not going to quibble over 14 additional cents.

    Ken
    "They are the proof that something was there and no longer is. Like a stain. And the stillness of them is boggling. You can turn away but when you come back they’ll still be there looking at you."

    — Diane Arbus, March 15, 1971, in response to a request for a brief statement about photographs

  6. #6

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    Thanks for all the info! I will try 10 ml for 2 roll then (1:50 dilution means 500ml, almost perfect fit for my stainless steel tank).

  7. #7

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    Pleeeeeeese, don't buy the "stand development" hype.

  8. #8

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    Quote Originally Posted by NB23 View Post
    Pleeeeeeese, don't buy the "stand development" hype.
    About what hype, precisely, are you speaking?

    s-a
    Last edited by semi-ambivalent; 08-20-2013 at 09:35 AM. Click to view previous post history. Reason: grammer
    I photograph things to see what things look like photographed.
    - Garry Winogrand

  9. #9

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    Quote Originally Posted by semi-ambivalent View Post
    About what hype, precisely, are you speaking?

    s-a

    Maybe the hype is over but not long ago, many newbies "discovered" that stand development enabled them to use their film at any ISO during shooting and Stand development would "even it all out magically". "Just let it sit for an hour without touching it".

    And "Oh yes, streaking? Never noticed any streaking. But you can use the semi-stand method. Just gently make one inversion at the 30 minute mark".

    The BS above was quite standard and spread out really fast on many forums.

  10. #10
    AgX
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    Quote Originally Posted by Ken Nadvornick View Post
    But I believe the original Agfa minimum recommendation was 10ml/80sqi.
    It was 10ml Rodinal concentrate per type 136-36.


    But the rule should be to follow the intruction of the very package. (Concentration of conctrate may have changed etc.)

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