120 format film development/Holga questions

Discussion in 'The Darkroom' started by doobs, Oct 7, 2007.

  1. doobs

    doobs TPF Noob!

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    Hello,

    I've recently purchased a Holga 120N and I'm curious about the development of 120 film. I am very familiar with 35mm development but this is my first time using any other format of film. I am guessing much of it is the same, set aside the time that different chemicals are in the tank. The local darkroom I go to has normal b+w chemicals (I'm guessing) and I wasn't sure if I needed a different kind. I am using Ilford FP-4 125. I often use this film in 35 as well. I was also curious about cross processing (I did a little reading on the internet) and if this can be done with black and white film. Also, what am I to do with the paper backing?

    A few off topic questions that somewhat fit here:
    - Holgas are known for their light leaks, however, I do not want my film to become extremely over taken with the leaks. I have held the camera up to the light in search of imperfections, and I have not seen any. I fear, however, that in between the back cover and the camera body. I have been told to cover it with duct/electrical/Gaffers tape. Will this suffice? Or do I need to worry at all?

    - Also, does anyone have any suggestions on color film to use in the Holga that will produce a rich, saturated color. Also, do drug stores, such as Longs, develop 120 format film? I have no idea how to develop color. If not, I'm sure I can just take it to the people that work at the darkroom.

    Thanks for the help :thumbup:
    - Seabass
     
  2. ann

    ann No longer a newbie, moving up!

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    developing 120 film (black and white) is no different , except for the times. You can use the same chemicals your using for your 35mm film.

    You should just practice loading it in the dark on the proper reel to get the feel. Buy some outdated film for testing purposes.
    remove the paper backing and just throw it away.

    you cannot cross process black and white, that is a color experience.

    We have many of these cameras at school and have never had one leak. However, others swear they have all sorts of leaks.

    Many people tape them up at all edges including the "red" window". You can use black tape.

    developing color film is not difficult just different . the most critical part is maintaining the temperature of all chemcials so it will be easier to have it done at a lab.

    have fun.
     
  3. doobs

    doobs TPF Noob!

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    I know the darkroom has test negatives for loading practice, but I am sure they don't have the backing on them. I'll give it a go though. Thanks for the help!

    - Doobington
     
  4. Jeff Canes

    Jeff Canes No longer a newbie, moving up!

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    Did you make a mistake on that reply? Because that is not right, the length of time is the same and so is the chemical mix ratio for both 35mm and roll, the only different is the volume of chemicals used
     
  5. doobs

    doobs TPF Noob!

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    So should I just use the amount of chemicals depending on the size of the tank?

    - Catalina 12
     
  6. Helen B

    Helen B TPF Noob!

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    Yes, the volume of chemicals is simply how much is required to cover the reel, for a normal non-rotating developing tank. The dilution ratio doesn't change. Development times can indeed vary between 120 and 35 mm - check the recommended times for the film and developer you will be using.

    Best,
    Helen
     
  7. doobs

    doobs TPF Noob!

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    Sweet, thanks a ton. I've a Ilford film development chart around here somewhere.

    - T Dogg
     
  8. Helen B

    Helen B TPF Noob!

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    The Ilford chart shows the same times for 120 and 35 mm. Kodak is the main culprit for suggesting different times for 35 mm and 120 - and the times are rarely very different.

    Best,
    Helen
     
  9. doobs

    doobs TPF Noob!

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    I know that the chart at the local darkroom I go to just has a list of films with no specific formats listed. Should I just follow the chart there? Other than that are all the stopping/fixing times all the same?

    - Davis Douglas
     
  10. Helen B

    Helen B TPF Noob!

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    Yes, the stop, fix and wash times and techniques are all the same.

    Good luck,
    Helen
     
  11. doobs

    doobs TPF Noob!

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    Thanks for all the help guys! I'll be sure to post the results.

    - Captain Steve
     
  12. ann

    ann No longer a newbie, moving up!

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