teacher looking for used negatives

Discussion in 'Medium Format & Large Format' started by gveeh, Aug 18, 2010.

  1. gveeh

    gveeh TPF Noob!

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    Hi everyone!
    I am a teacher and I want to do a cyanotype project with my students. Many of them have never even seen a negative before and I was thinking this would be a fun idea to introduce them to some history of photography and to learn a little bit about how the process works.

    I am looking for unwanted negatives that we could use for this. Any help would be much appreciated!
    Thanks!
     
  2. Josh66

    Josh66 Been spending a lot of time on here!

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    Couldn't you just buy a roll of film and take some pictures?

    Or, better yet - make your students buy a roll of film and take some pictures...?
     
  3. gveeh

    gveeh TPF Noob!

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    We don't have a darkroom or film cameras. The class is a digital class, but I still want them to get an idea of how negatives work. I am hoping to find some larger negatives somewhere that are unwanted.
     
    Last edited: Aug 19, 2010
  4. Scatterbrained

    Scatterbrained Been spending a lot of time on here!

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    Just peruse some of those California garage sales, maybe you'll come up with a box of faux Ansel Adams negatives. :D
     
  5. compur

    compur No longer a newbie, moving up!

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    There are lots of large format negatives on eBay that sell for a few dollars.
     
  6. gveeh

    gveeh TPF Noob!

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    Scatterbrained- :lol:

    compur- Yeah, I've been looking on ebay too. There's a couple listings I have my eye on.
     
  7. Vautrin

    Vautrin No longer a newbie, moving up!

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    How many negatives do you need?
     
  8. Vautrin

    Vautrin No longer a newbie, moving up!

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    Also what kind of school?
     
  9. Olive_Miceli

    Olive_Miceli TPF Noob!

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    I took an experimental class in the fall and we made our own negatives digitally in photoshop.
    You just find an image
    image>mode>grayscale
    to make it more true to a negative quality you want to make it flat,
    image>adjustment>levels
    on your input level drag your midtones to the left, and on your output level drag your shadows to the right
    then turn it back to color capabilites
    image>mode>CMYK
    Set your foreground color
    double click the foreground box> c=0 m=70 y=70 k=0
    to add the negative color layer
    edit>fill
    Choose the overlay mode
    NOW
    you just need to make them transparent, you can print them out on computer paper an rub mineral oil on the paper to make it translucent, but this takes time to dry.
    you can also take the digital files to an office supply store and have them print it off on transparency sheets.
    and Ta-Dah!
    Instant Digital Negative, good for cyanotypes, van dykes, or gum bichromate.
    Cheers!
     
  10. ann

    ann No longer a newbie, moving up!

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    you can do the above and print them out on overhead transparent "film" and they work fine without the extra step using oil , etc.
     
  11. gveeh

    gveeh TPF Noob!

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    Vautrin- I'm hoping to just get as many as I can. It's a public high school.

    Olive- Thanks for the detailed idea.
     

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