In-Camera Cyanotype Negatives

Discussion in 'Alternative Techniques & Photo Gallery' started by pip_dog, Feb 18, 2018.

  1. pip_dog

    pip_dog TPF Supporters Supporting Member

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    Hello, long time no post from me. Here's what I've been working on.

    My university only lets photography majors use their labs so I've been searching for not-too-toxic processes to do in my apartment, I've settled on cyanotypes with hopes of the cyanotype rex process allowing for at least some portrait work.

    Anyway, here's my first attempt at using cyanotype paper (actually the store-bought sunprint paper for now) as a negative inside my calumet 4x5. It came out of the holder as a very low contrast positive (solarisation?) and then washed away to an underexposed negative.

    Exposure + camera info
    ~3.5hr exposure (underexposure)
    ~f/5 on salvaged binocular lens, I wasn't sure if binocular lenses were UV coated. Not this one apparently
    some front rise

    Out of the holder
    [​IMG][/url]

    Scanned and inverted
    [​IMG][/url]

    Converted to black and white with quick adjustments
    [​IMG][/url]

    I had planned on doing an exposure in my car on the way back to university but something is wonky with my engine so had to abandon for another day :boggled:
    [​IMG][/url]

    I think there is good promise here, especially when I start making my own papers. A big issue will be finding places to stick my camera for hours on end without it getting stolen or something.


     
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  2. compur

    compur Been spending a lot of time on here!

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    Binocular lens! Very clever.

    BTW, regular B&W processing chemistry is not all that toxic. You don't want to drink it or take a bath in it but there are common household cleaning products that are worse.
     
  3. pip_dog

    pip_dog TPF Supporters Supporting Member

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    Thanks compur, the main concern with the B+W chems for me is the smell. I have roommates so taking over the bathroom isn't really an option meaning I'd have to do it in my room. I have some Ilford paper and some developer and fixer so I might try it out this week just to see what the fumes are like, I remember the fixer being smelly when I was doing pinholes with it. Best case scenario I think is to develop in the morning then open the window and go to class for the rest of the day!
     
  4. pip_dog

    pip_dog TPF Supporters Supporting Member

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    I just picked up the bottle of developer, sounds like it's got some crystals in with some liquid. Might be the time to try caffenol!
     
  5. Dave442

    Dave442 No longer a newbie, moving up!

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    My roommates never had a problem with me taking over the bathroom and using the usual B&W chemicals. It usually had to be when they were out as we only had the one bathroom so an hour developing and an hour with everything stored away. Shouldn't be any worse than how they might leave the bathroom smelling.
     
  6. pip_dog

    pip_dog TPF Supporters Supporting Member

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    Ha, guess that's true! I might as well ask, using b+w paper would be a heck of a lot easier than cyanotypes.
     
  7. Light Guru

    Light Guru Been spending a lot of time on here!

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    The chemicals the develop bw film are just about the same and you don’t have to use the bathroom. Use a daylight tank and a changing bag.


    Sent from my iPhone using Tapatalk
     
  8. compur

    compur Been spending a lot of time on here!

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    There are alkaline fixers which are odorless. There are also odorless stop baths (or use water rinse instead).
     
  9. pip_dog

    pip_dog TPF Supporters Supporting Member

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    Thanks all for the suggestions, I think I have maybe been too hesitant to use the b&w chemicals. So, here is my solution!

    The Cyanomatic 1000!
    [​IMG][/url]

    Is the paper on the focal plane? Sure!
    What's the f-stop? f/un!
    How is the paper held inside the camera? Don't worry about it!
    All for the low, low price of a repurposed pinhole camera!

    This should free up my calumet for b&w stuff, I will still post my cyanotype experiments here though.
     
    Last edited: Feb 20, 2018
  10. pip_dog

    pip_dog TPF Supporters Supporting Member

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    The scanner I have is almost 20 years old, turns out VueScan is not the miracle program I thought it was. I can't get my scanner to work on either of my computers so until I go back home and pick up on of my iMac G3s I'm stuck using university scanners, oh well. I took this with my camera and inverted in photoshop, rough and ready

    Monongahela river.
    [​IMG][/url]
     
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  11. terri

    terri Administrator Staff Member Supporting Member

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    Fun project! Keep playing and experimenting, and be sure to post your results. :thumbyo:
     
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  12. petrochemist

    petrochemist TPF junkie!

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