Kodachrome and Caffenol

Discussion in 'The Darkroom' started by 480sparky, Nov 5, 2015.

  1. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    So I decided to use all that old Kodachrome I was given and experiment with souping it in caffenol. Yesterday, I bought some instant coffee and washing soda, but could not find any vitamin C in crystal form, so I decided to forge ahead without it.

    I loaded up a roll of Kodachrome 40 (made for 3200K lighting) and fired off 6 frames, exposing it at ASA 10. I developed it at 68°F for 9 minutes, followed by several rinses. The caffenol came out MUCH darker than it went in, so I was hoping the remjet got dissolved.

    I fixed with normal Ilford fixer for 5 minutes, and there was just a touch of remjet still clinging to the film. Several swipes after a thorough rinse removed a bit more of the (very soft) remjet.

    What I ended up with was some very faint (negative) images on orangish film base. This is pretty much what I expected.

    [​IMG]

    Not bad for my first caffenol job, 'specially considering the film expired 25 years ago.

    I am doling out the film in short sections just to characterize it and plan my next move. Hopefully, it will only take 3 or 4 full rolls before I can start getting usable images.


     
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  2. snowbear

    snowbear fuzzy-wuzzy Supporting Member

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    @limr has some cafenol recipes and data; she might chime in. If not, you can catch her in the coffee house.
     
  3. limr

    limr Moderator Staff Member Supporting Member

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    Sparky, I bet those will still scan pretty well. They'll come out blue-scaled.
     
  4. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    I dunno. They're very faint. Maybe nice highlights, but nothing in the shadows.

    Started to scan them, and I ended up being forced to update the scan software. It'll take a few more minutes now.
     
  5. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    [​IMG]
     
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  6. timor

    timor Been spending a lot of time on here!

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  7. limr

    limr Moderator Staff Member Supporting Member

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  8. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    The local GNC carries it, they're just out of stock. It will be quicker to wait for them to restock it than to order online.
     
  9. Derrel

    Derrel Mr. Rain Cloud

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    Any ideas on using a real, conventional B&W film developer on this stuff? Do you suppose there's a need for a really lowered Exposure Index on this, in order to get some shadow detail? I mean, ASA 40 was always in the realm of slow film speed, so maybe with only "one layer" of the multi-layer Kodachrome (8-step process?) being worked on, maybe there's gonna be a need for a really generous, low E.I., like maybe ASA 1 or something ridiculous like that? And maybe a need for push processing as well? Addendum--I see now that your E.I. was ASA 10...so, gosh...

    I think the developer just does not have the energy. Obviously without the Vitamin C, it;s not a really good recipe, but the development times I've seen on caffenol are lengthy, so I'm wondering if you might really ought to go with a high-energy developer, yet diluted a bit, like HC-110?
     
  10. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    I've thought about using 'normal' developer, but heck... I've got dozens of rolls to play with. By this time next week, I should have some VitC to add to the mix. I was more interested in how to deal with the remjet.

    And...... I ran another test strip through and souped it for 20 minutes. Still not there, but much better. It's hanging up and drying right now.
     
  11. limr

    limr Moderator Staff Member Supporting Member

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    The Caffenol times aren't that lengthy. I usually do higher speed films at 14:30 and slower at 12:30. Maybe this just needed a bit more time in the soup. Or the Vitamin C. Or both.

    (Edit: Simulpost. I see you tried it again with more time.)
     
  12. vintagesnaps

    vintagesnaps Been spending a lot of time on here!

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