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  1. #1

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    Intensifying negatives with Selenium toner

    I'm finally going to try this on some reject 35mm negatives. Anyone have any experience doing this with 35mm? As a starting point I was going to follow AA's recommendation but it's kind of vague and probably optimized for sheet film. He suggests Kodak Rapid Selenium diluted 1+2 with working strength washaid for 5-10 minutes. Pretty big range.

  2. #2
    Vaughn's Avatar
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    1+2 or 1+3 is usual. Do them in strips in a white tray -- that way you can see the intensification. Generally, one tones them until one sees nothing else happening -- it is hard to "over-do it" as the toning continues until there is no more silver available for the selenium to act on. One can get about a grade of contrast more, depending on the film and its exposure/development. Toning will not put information on the neg where there is none (due to under-exposure of the film).
    At least with LF landscape, a bad day of photography can still be a good day of exercise.

  3. #3
    Ian Grant's Avatar
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    When toned and washed unbend Paper clips to hang the strips from to dry

    Ian

  4. #4
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    Done it a LOT.... I always re-fix the negs after toning them .... worked for Ansel and Al Weber for a few years way way back and they did/do this... in case there is any silver bromide left on the negs and it can be done more than once!

    Logan

  5. #5

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    You can get one grade contrast more with selenium.

    With Victor`s Intensifier you can get 3/4 grades and wipe it back off with fix. It has mercury something in the formula and is hardardous, so keep your fingers out. Formula on internet somewhere, chems from ArtCraft. You supply scale for mix. When all else failed, that was my last resort and it never failed.

  6. #6
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    I don't think it's necessary to refix negatives. Selenium doesn't rehalogenate silver to the best of my knowledge. I don't refix prints after toning in selenium so I don't see why negatives would be any different.

    However, I do make sure that my negatives are absolutely fixed and washed before toning in Selenium. I think this is definitely more important.
    Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.

    http://www.flickr.com/kediwah

  7. #7
    Vaughn's Avatar
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    I believe Kodak RST already had hypo in it...or some type of fixer -- which is why it might smell of ammonia.

    Vaughn
    At least with LF landscape, a bad day of photography can still be a good day of exercise.

  8. #8
    Ian Grant's Avatar
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    It has Ammounium Thiosulphate in it so there's no need to re-fix, as it's a pure metal ion substitution Selenium for Silver there's no Bromides or Chlorides present they were all removed in the original fixing step.

    Clayne's point is more important about proper fixing and I suspect Logan's forgotten that Ansel Adams used a plain Hypo fixer before Selenium toning not after to make sure there was no staining etc from any quasi-soluble silver-thiosulphate intermediary compounds left in paper.

    In addition the KRST is being used at a stronger than normal dilution for intensifying so any effects of the Ammonium Thiosulphate will be far greater, ie it's fixing action..

    Ian

  9. #9

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    Thanks everyone.

  10. #10
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    makes the neg a bit grainier and will really make your highlights jump out at ya. also great for salt printing .

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