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  1. #121

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    Quote Originally Posted by holmburgers View Post
    There are all sorts of lame prism/wedge awards and you can just easily buy a blank one. These should/could work great for Lippmann viewing.
    Holmburgers- You deserve one of these!

  2. #122
    holmburgers's Avatar
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    Haha, I don't deserve a thing.

    The award goes to R Shaffer who's the only one yet to DO IT! All we can do is talk about it!

  3. #123

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    Quote Originally Posted by holmburgers View Post
    All we can do is talk about it!


    Some people think Silence is Golden!
    In the words of the immortal optimist, Ambroce Bierce:

    Talk (v.t. )
    To commit an indiscretion without temptation, from an impulse without purpose.

  4. #124
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    Hello guys.
    I have not forgotten about the translation marathon project. I've been busy lately but intend to resume my efforts on the second translation as soon as this weekend, hopefully.
    Any new progress on the "actually doing it" ground?

  5. #125
    holmburgers's Avatar
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    Wow, I tell you what! Somtimes some weird coincidences occurr.... I was just about to post something but Lionel beat me to it!

    Despite a long lull, this project is still fresh in my mind. My darkroom should be up and running by the end of the week and at that point I definitely intend to do the real deal, hopefully sooner than later.

    Like I said, I was going to post something, and it was of a more theoretical nature, but it inolves the issue of transmission vs. reflection again. I'm very intrigued by the prospect of getting a Lippmann transparency.

    Since a negative/complementary image is seen upon transmission, it stands to reason that if one were to take a Lippmann photograph of a C-41 negative (perhaps by contact printing it), you could achieve a dichroic positive image that would potentially be easier to view than its reflective counterpart.

    I know I've mentioned this before, but I can't remember if I came to this exact conclusion.

    More importantly though, YES, this project is still alive. Just simmering on the back burner.... soon to be served!
    If you are the big tree, we are the small axe

  6. #126
    Lionel1972's Avatar
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    Great to know you're about to try it for real Holmburgers! Goodluck and let us see what you get.

  7. #127
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    I definitely will... hold me to it!
    If you are the big tree, we are the small axe

  8. #128
    holmburgers's Avatar
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    Quote Originally Posted by R Shaffer View Post
    Exposure: 2min @ f/8 bright sun

    Processing:
    9min soak in Glyaxol @ 65deg ( prev. was 6min, did not check end temp )
    3min development @ 65deg ( actually I used drift 63deg start - 66deg end )
    rinse 10min @ 66deg
    30s soak in 2% glycerin + 3 drop LFN @ 66 deg ( 375ml total )
    Hey Mssr. Shaffer, I forget now as it's been so long, but what are the possible substitutes for glyaxol. It's purpose is to harden the emulsion, right? Do you think chrome alum would do the trick?

    Also, I forget the purpose of the glycerin and potential substitues. Not that it's a chore to get glycerin (http://www.walgreens.com/store/c/afr...118523-product) but I'm getting some Sorbitol for my screen plate stuff and I'm curious if that would work.

    Long live Lippmann!

  9. #129

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    Quote Originally Posted by holmburgers View Post
    Hey Mssr. Shaffer, I forget now as it's been so long, but what are the possible substitutes for glyaxol. It's purpose is to harden the emulsion, right? Do you think chrome alum would do the trick?

    Also, I forget the purpose of the glycerin and potential substitues. Not that it's a chore to get glycerin (http://www.walgreens.com/store/c/afr...118523-product) but I'm getting some Sorbitol for my screen plate stuff and I'm curious if that would work.

    Long live Lippmann!
    I would think that chrom alum would work, however you'll need to figure out what dilution and time to get sufficient hardening.

    I believe that the idea of the glycerin is to re-swell the emulsion. I don't know what sorbitol is, so I can't help there.

    Both of these steps are an attempt to keep the developed & dried emulsion the same thickness as the exposed emulsion. The shrinking emulsion will cause color shift or loss color image all together.

  10. #130
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    Ahh, ok, thanks for the refresher course!

    Yeah, I'm not too sure about this Sorbitol either but I'm using it for my screen plate as per PE's suggestion. It's supposed to make my gelatin more easily soluble, but isn't gooey like glycerin. It's a humectant and has a high refractive index.

    I'm picking some up tomorrow from Walgreen's, and of course the pharmacist thinks it's because I'm constipated....



 

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