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  1. #41
    baachitraka's Avatar
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    That said, it is recommended to have at-least 5ml of developer for stand. With that I may require 500ml of water to have 1+100 stand for 60 mins.

    I try to fill my small jobo tank with that volume of water and the level has surpassed tank's neck... :-|

    But, I have no idea why 5ml...
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  2. #42
    Ian Grant's Avatar
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    Quote Originally Posted by baachitraka View Post

    But, I have no idea why 5ml...
    That's relatively easy it's possible to calculate how much of a developing agent is needed to process a film, and there need to be excess because otherwise local exhaustion limits development of the highlights.

    I have figures Ilford published in the 1950's when they were working on a new developer and they are applicable to ther developers/developing agents once you allow for M's etc.

    Ian

  3. #43
    Roger Cole's Avatar
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    I just got a bottle from Freestyle, and it's "Compard." Which variant is that?

    I confess I tried Rodinal in the 90s and never was able to get results I liked. No matter how much I developed it still seemed flat, which doesn't seem consistent with other reports but there it was. So many people seem to like it I decided to give it another try.

  4. #44

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    Quote Originally Posted by Roger Cole View Post
    I just got a bottle from Freestyle, and it's "Compard." Which variant is that?

    I confess I tried Rodinal in the 90s and never was able to get results I liked. No matter how much I developed it still seemed flat, which doesn't seem consistent with other reports but there it was. So many people seem to like it I decided to give it another try.
    What dilution were you using? I hope you weren't attempting to do stand development.
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  5. #45
    Roger Cole's Avatar
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    Quote Originally Posted by Gerald C Koch View Post
    What dilution were you using? I hope you weren't attempting to do stand development.
    No of course not. I'm not even sure I'd HEARD of stand development then, though I could have figured out the gist from the name.

    I think it was 1+50, agitation every 30 seconds with a couple of inversions. I could probably dig up those negatives and the notes.

    They weren't unprintable or anything, but definitely seemed to need harder paper than my other negs even if I developed enough they were starting to look just too dense overall. Results otherwise were ok but nothing special.

  6. #46
    Diapositivo's Avatar
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    Quote Originally Posted by Roger Cole View Post
    I just got a bottle from Freestyle, and it's "Compard." Which variant is that?
    Compard is a German firm which produces photographic chemicals. They also make the Rollei Digibase C-41 treatment.

    This particular product has a ph of 10.2 according to the safety data sheet:

    http://www.freestylephoto.biz/pdf/ms...09_Spezial.pdf

    (Old-style Rodinal?)

    The description is very funny:

    Now called R09 Spezial. Exactly the same formulation as
    Agfa Rodinal Special.

    Special Note: This product and Agfa Rodinal Special are not Rodinal.
    Rodinal Special is a smaller unit version of Agfa Studional.


    So beware: Agfa Rodinal Special is not Rodinal. It's Rodinal Special, which is equivalent to Studional. Is this a third variant?*

    These guys have to have learned marketing by mail

    http://www.freestylephoto.biz/9721-C...odinal-Special

    * EDIT: This appears to be a phenidone-hydroquinone developer and has nothing to do with Rodinal, either old-style or new-style.
    Last edited by Diapositivo; 08-11-2011 at 05:54 PM. Click to view previous post history.
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  7. #47

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    Dilution and agitation sound OK. Contrast also depends on the lightiing of the subject. For less contrasty subjects one would decrease exposure and increase development time. This prevents the negatives from becoming too dense. But if you were shooting 35mm your target paper grade would be 2-1/2 or 3.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

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  8. #48

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    Rodinal Special was developed by Agfa for the photofinishing business which accounts for the short developing times.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  9. #49
    Roger Cole's Avatar
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    Quote Originally Posted by Diapositivo View Post
    Compard is a German firm which produces photographic chemicals. They also make the Rollei Digibase C-41 treatment.

    This particular product has a ph of 10.2 according to the safety data sheet:

    http://www.freestylephoto.biz/pdf/ms...09_Spezial.pdf

    (Old-style Rodinal?)

    The description is very funny:

    Now called R09 Spezial. Exactly the same formulation as
    Agfa Rodinal Special.

    Special Note: This product and Agfa Rodinal Special are not Rodinal.
    Rodinal Special is a smaller unit version of Agfa Studional.


    So beware: Agfa Rodinal Special is not Rodinal. It's Rodinal Special, which is equivalent to Studional. Is this a third variant?*

    These guys have to have learned marketing by mail

    http://www.freestylephoto.biz/9721-C...odinal-Special

    * EDIT: This appears to be a phenidone-hydroquinone developer and has nothing to do with Rodinal, either old-style or new-style.
    But that isn't what I got. This is what I got:

    http://www.freestylephoto.biz/9724-C...r-125ml-4-oz.?

    This is the exact same developer version as the world renowned Agfaphoto Rodinal you have come to love and respect.

    This is not an imitation or previous/older Rodinal formulation.
    Like Agfa Rodinal it is a classic developer--some would say the classic developer--that features fine grain and high acutance, perfect for use with Arista, Ilford and Foma films. Use at 1:25 or 1:50 dilution.

    Replaces Agfa Rodinal, Item #9719

  10. #50
    Roger Cole's Avatar
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    Quote Originally Posted by Gerald C Koch View Post
    Dilution and agitation sound OK. Contrast also depends on the lightiing of the subject. For less contrasty subjects one would decrease exposure and increase development time. This prevents the negatives from becoming too dense. But if you were shooting 35mm your target paper grade would be 2-1/2 or 3.
    Thanks I know all that. I've been doing darkroom work since 1979 or so.

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