Geavert Ridax

Discussion in 'B&W: Film, Paper, Chemistry' started by Jerevan, Sep 30, 2008.

  1. Jerevan

    Jerevan Subscriber

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    On a whim, I bought a small package of Gevaert Ridax 8N paper. I guess it is at least forty years old. Does anyone have some more information about this paper? I don't know whether it is worth using, but then again, I don't like stuff sitting on a shelf...
     

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  2. Thomas Bertilsson

    Thomas Bertilsson Subscriber

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    I have no idea about your paper, but try lithing it if it fogs in standard chemistry.
    - Thomas
     
  3. Mark Antony

    Mark Antony Member

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  4. Jerevan

    Jerevan Subscriber

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    Thomas, it would be small lith prints indeed... the paper size 6.5 x 6.5 cm. :smile:

    Mark, thanks for the article. I'll see what I can do with the paper, whenever I get around to some experiments.
     
  5. AgX

    AgX Member

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    Ridax has got an AgBr/AgCl emulsion intended for contact-printing by amateurs and was stated by Gevaert to have a large exposure latitude as well to be apt for high and low bath temperatures and to withstand fogging.

    (There is a hint that there were different image hues: Blue-black image tone on white base in contrast to warm-black on the sepia base. Though that could be intended as a reference to the use of different developers.)

    Amber lab lighting


    it was available in 6 grades

    N = normal grade

    8 = Glossy surface/White base


    and was on offer at least in 1949…
     
  6. Thomas Bertilsson

    Thomas Bertilsson Subscriber

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    Yep. Small is good sometimes. Look at Kertesz early work. Contact print some 2-1/4 negs on it.

    - Thomas

     
  7. Jerevan

    Jerevan Subscriber

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    Yesterday I entered the realms of Doom, or rather, opened the package I bought a year ago. :smile: To cut the story a bit short, I managed to get a decent photo out of the paper, using f2.8 and 30 seconds. I developed in 6 ml Rodinal, making a total volume of 300 ml, starting at 2 minutes for the first one then eventually bailing out at 5 minutes for the fifth and last one. Even at these times, I think I was a bit off. The film border was still not really black. I am going to do a second try to see if I can get closer. After the session yesterday night, I am a bit intrigued by the lith idea Thomas suggested.

    Interestingly, the paper has a black border all around, which means that if you are patient enough to line up the negative, you get a nice black border when developing the paper. I don't know this was done, but it looks very slick.
     
  8. Ray Rogers

    Ray Rogers Member

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    Sorry, I don't understand this...

    The film border was still not really black...
    the paper has a black border all around...
    you get a nice black border when developing the paper.

    Could you clarify/expand?

    Thanks...
     
  9. Jerevan

    Jerevan Subscriber

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    Okay, I guess this would be easier to explain in pictures than in words. I exposed the negative, which has an unexposed border of film. This unexposed part of film was not really black, which to me meant that the photo has to have additional exposure to have enough contrast.

    In addition to this, there seemed to be a black border within the paper itself which showed up when I developed the print. It's possible I am mistaken about this. I'll get around to posting an example in a few days time, I think that'll make it easier to understand.
     
  10. Ray Rogers

    Ray Rogers Member

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    Yea, it could be very simple but i am confused.
    It sounds like you describe a border or reduced sensitivity/fog of low density near the edges
    but- well, i look forward to the pixs!

    ray
     
  11. Mark Antony

    Mark Antony Member

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    I haven't touched mine yet, post an example please-I've just bought a Zeiss Ikonta from 1932 I'd love to make some images and contact them I have some Agfa Nuetol WA all I need is the 1930's film... :smile:
     
  12. HEGO

    HEGO Member

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    Papel Ridax

    [Quote = Jerevan; 687797] En un capricho, me he comprado un paquete pequeño de papel Gevaert Ridax 8N. Supongo que es por lo menos cuarenta años. ¿Alguien tiene alguna información más sobre este trabajo? No sé si vale la pena utilizar, pero de nuevo, no me gustan las cosas que se sienta en un estante ... [/ quote]

    Foto de 1937 con papel gevaert ridax . Muy buena calidad[​IMG]
     

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  13. scheimfluger_77

    scheimfluger_77 Subscriber

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    I realize this is ancient news, but what was your impression of this paper? Did you ever try lith printing it?
     
  14. Jerevan

    Jerevan Subscriber

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    Yeah, an ancient thread it is. :smile:

    Good that you reminded me - I'll see if I can find the examples.