Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,202   Posts: 1,531,567   Online: 1120
      
Results 1 to 10 of 10
  1. #1

    Join Date
    Oct 2010
    Location
    Waterloo, Ontario
    Shooter
    Medium Format
    Posts
    48
    Images
    13

    X-ray Fogged Film ? Old Developer ? Not exposed Film ? Don't know

    I am a newbie to developing my own film. I've successfully developed 2 rolls so far so please go easy on me. I developed two rolls the last couple of nights and both had come up completely transparent - just a plastic transparent sheet of film. Both films were T-max 400, developed in Rodinal 1:50, for 14 min at 78C.

    I've carried these rolls around to some trips abroad to South America, specifically, always as a carry on. But now I started thinking that the X-ray machines for carry-on luggage are not likely to be calibrated, as here in the US, to avoid fogging film. However, I am not seeing any fog just a transparent film - i not even see the film brand and the numbering of the frames.

    The rodinal solution i have is two months old. It is dark in color and I guess that's a normal coloration so I am not too suspicious about it.

    I have a Mamiya 6 that I bought last year and feel pretty comfortable operating it. I don't know how can I not expose the film. But I am not discarding any option.

    As far as darkroom equipment, i have the universal Paterson Tank, that once I rolled the film into the spiral, placed the funnel on top of it and locked it tight, the tank is completely sealed.

    I don't know what I'm doing wrong and feeling very disappointed about this now. Thanks in advance for your comments !
    Gabe

  2. #2
    MattKing's Avatar
    Join Date
    Apr 2005
    Location
    Delta, British Columbia, Canada
    Shooter
    Multi Format
    Posts
    12,233
    Images
    60
    Sorry about your two rolls.

    When you say "rodinal solution" are you referring to the concentrate, as it comes from the manufacturer, or are you referring to a diluted working solution? If it is the working solution, it won't last two months.

    Usually, when there is nothing on the film, it means either:

    1) your developer is dead; or
    2) somehow you mixed up the order of the chemistry (fixer before developer).

    Hope this helps.
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  3. #3
    ozphoto's Avatar
    Join Date
    Apr 2006
    Location
    Bangkok, Thailand
    Shooter
    Multi Format
    Posts
    1,113
    Images
    1
    Nothing on the film (no rebate information - film is totally clear) means you accidentally fixed the film first before developing. An easy mistake and one that many have experienced, so you are not alone.

    Easiest way to ensure it doesn't happen again is to pour in your developer first, and then open your fixer and measure out, after starting the development phase. This is how I do it - just to be on the safe side.
    Last edited by ozphoto; 02-18-2011 at 01:44 AM. Click to view previous post history. Reason: Typo corrections

  4. #4
    Paul Sorensen's Avatar
    Join Date
    Nov 2004
    Location
    Saint Paul, MN
    Shooter
    Multi Format
    Posts
    1,895
    Images
    26
    Yeah, since there is nothing at all on the film, it has to be either of the above, and I would suggest fixing before developing or forgetting to mix the Rodinal into the water and "developing" in plain water. Even using really bad Rodinal or not nearly enough Rodinal would have given you something on the film in all likelihood. X-rays or light leaks make the film darker, not lighter, so it can't be from that.

    I would just shoot and develop another roll and work on ways to ensure that you can avoid this kind of mistake again. My personal work flow is to pour and measure everything and put the containers in order on my counter. I double and triple check everything too. That way, I grab them in order and the chance of this happening is far reduced. Nanette's suggestion sounds like a very good one too. Unfortunately, this is all a part of the learning process. You have now made the one mistake that is most likely to give you useless film. Now that you have done it, you don't have to do it again!

    Paul

  5. #5

    Join Date
    Oct 2010
    Location
    Waterloo, Ontario
    Shooter
    Medium Format
    Posts
    48
    Images
    13
    thanks a lot for your responses and encouragement.

    MattKing : with Rodinal solution i was referring to the working solution. So two months is too long then. How long does a working solution usually last at room temperature? I think this is the mistake I made.

    Nanette and Paul: I have calibrated and labeled cylinders that I put in a row for developer, stop bath (yellowish color), and a two bath fixer (Ilford), so I think it is very unlikely that I have mixed them up but I will be double-extra cautious tomorrow with a new roll. Very glad to hear about that X-ray scans were not the cause, that's a lot of money in film !

    Thanks again guys !!

  6. #6
    Nicholas Lindan's Avatar
    Join Date
    Sep 2006
    Location
    Cleveland, Ohio USA
    Shooter
    Multi Format
    Posts
    2,372
    Images
    4
    Quote Originally Posted by Gabino View Post
    How long does a working solution usually last at room temperature?
    Long enough to develop film and no longer: Rodinal is a 1-shot developer and you discard it after use. There is no 'working solution' to keep - it should be diluted just before use.
    DARKROOM AUTOMATION
    f-Stop Timers - Enlarging Meters
    http://www.darkroomautomation.com/da-main.htm

  7. #7
    MattKing's Avatar
    Join Date
    Apr 2005
    Location
    Delta, British Columbia, Canada
    Shooter
    Multi Format
    Posts
    12,233
    Images
    60
    Gabino:

    I've never encountered anyone who made up and then stored a Rodinal working solution, so I'm afraid that, as far as I know, you are the authority on doing that .

    Most people make up just enough working solution, just before they use it.

    If anyone else here on APUG has a different experience, I'd like to hear it.
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  8. #8
    Paul Sorensen's Avatar
    Join Date
    Nov 2004
    Location
    Saint Paul, MN
    Shooter
    Multi Format
    Posts
    1,895
    Images
    26
    Wow, I have never heard of mixing up a working solution ahead of time either. I guess that must be it, then. Try again with freshly mixed rodinal and let us know.

    If you are mixing really small quantities, a syringe works well for measuring. I found one at a local drug store that works perfectly for Rodinal.

  9. #9

    Join Date
    Oct 2010
    Location
    Waterloo, Ontario
    Shooter
    Medium Format
    Posts
    48
    Images
    13
    alright guys! that's the mistake i made. First and last ! At the end of the day, you gave me a piece of mind that my error was that simple to fix ! happy weekend !

  10. #10
    Rick A's Avatar
    Join Date
    Mar 2009
    Location
    north central Pa
    Shooter
    Multi Format
    Posts
    5,855
    Images
    32
    First, but certainly not the last mistake you'll ever make. I've been at this for 45 years, and still screw-up on occasion, its the nature of the beast.
    Rick A
    Argentum aevum
    BTW: the big kid in my avatar is my hero, my son, who proudly serves us in the Navy. "SALUTE"



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin