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  1. #21

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    To ILoveTLRs, what sort of tests were you runnung with these films?

    As you scanned the film, I am wondering whether you are seeing more real grain, or whether it is grain aliasing giving larger apparent grain.
    Steve

    "You don't need eyes to see, you need vision" - Maxi Jazz

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  2. #22
    Ian Grant's Avatar
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    Quote Originally Posted by Photo Engineer View Post
    While doing homework for a post by Patrick Gainer, I found a chart in Haist, Vol I, P 565, which shows the effect of extended times in the fixer for two films. The times were 5mins, 30mins and 60mins. Effectively, anything much over 10mins IMHO would be bad. Since he shows only the 3 widely spaced times, the actual rate is not evident, and would have to be quantitatively determined.

    PE
    Many people use Rapid fixers like Hypam / Ilford Rapid Fixer, or Kodak and other manufacturers equivalents. Its easy to see/demonstrate how even a few minutes in fresh fixer can alter the final density with prints, particularly warm-tone papers, it's far harder to spot what's happening with films.

    The Haist tests are possibly just the tip of the iceberg as some fixer formula are faster/stronger and more aggressive than others. May & Baker (Champion) Amfix is one that springs to mind, it's an excellent fixer but times need to be kept to a minimum to prevent the fixer attacking the silver and bleaching the image.

    Ian

  3. #23
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    Ian;

    That is why I am working on my Super Universal Fix. Stay tuned.

    PE

  4. #24
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    I fix according to the recommendations. I looked through all my referrences and could not find anything about long fixing/wet times and grain. But from The Negative pg. 191: "Excessive fixing must be avoided, since it can lead to sulfiding of the silver, and the fixer may begin to bleach the image by removing silver as well as the unreduced halides. This bleaching is first visible in the low density areas."

    I don't pretend to know what "sulfiding of the silver" means---is that the bleaching process mentioned?

  5. #25
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    Chuck;

    Sulfiding and bleaching are not the same thing.

    Bleaching removes the image, but sulfiding it means that the tone changes, like toning and the image looks different in different parts of the scale.

    PE

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