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  1. #1

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    I've Reached a New Low

    Are my prints any sharper? My most recent batch
    of Beer's A working strength uses just one gram of
    sodium sulfite per liter. It occurred to that very low
    sulfite levels produce sharper images on film. Have
    I left mushy grained prints behind with that very low
    sulfite brew? Dan

  2. #2
    Ian Grant's Avatar
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    No

  3. #3
    PhotoJim's Avatar
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    I suppose if you viewed your prints under heavy, heavy magnification, they might appear to be sharper...
    Jim MacKenzie - Regina, Saskatchewan, Canada

    A bunch of Nikons; Feds, Zorkis and a Kiev; Pentax 67-II (inherited from my deceased father-in-law); Bronica SQ-A; and a nice Shen Hao 4x5 field camera with 3 decent lenses that needs to be taken outside more. Oh, and as of mid-2012, one of those bodies we don't talk about here.

    Favourite film: do I need to pick only one?

  4. #4

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    Quote Originally Posted by Ian Grant View Post
    No
    So the level of sulfite in the developer has "no"
    affect on the sharpness of the image. Do varying
    sulfite levels have any affect on the image? Dan

  5. #5
    Ian Grant's Avatar
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    No because the grain etc in the paper is already very fine and the level of sharpness is far more dependent on the negative, degree of enlargement, lens used etc.

    Ian

  6. #6
    Sparky's Avatar
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    I had the impression that sulfite was a KNOWN offender in this regard (i.e. perceptol, microdol etc) - which are acutance developers - but they also dissolve silver grains...

  7. #7
    Ian Grant's Avatar
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    Perceptol and Microdol-X use sodium chloride as the silver solvent/restrainer. Never heard of either being called an acutance developer.

    Ian

  8. #8
    Dave Krueger's Avatar
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    I'm pretty sure Barry Thornton calls Perceptol an accutance developer in Edge of Darkness.

    In any case, it sounds like film and paper developers are getting confused in this thread. The original post was about paper developer, wasn't it?

  9. #9
    PhotoJim's Avatar
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    Sharpness is essentially a non-issue at the print level. It isn't an issue at the negative level, either, if you're only making contact prints or small enlargements.

    Now, when you enlarge a 35mm 24x36 negative to large print sizes, it is an issue - a big one.
    Jim MacKenzie - Regina, Saskatchewan, Canada

    A bunch of Nikons; Feds, Zorkis and a Kiev; Pentax 67-II (inherited from my deceased father-in-law); Bronica SQ-A; and a nice Shen Hao 4x5 field camera with 3 decent lenses that needs to be taken outside more. Oh, and as of mid-2012, one of those bodies we don't talk about here.

    Favourite film: do I need to pick only one?

  10. #10
    Sparky's Avatar
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    He was actually talking about a film developer -and that the result is on the print - if I'm not mistaken. But I was simply talking about sulfite being a dissolver of grain - which may or may not be true (can't remember at the moment - but it was my impression). If perceptol isn't an acutance developer - well, I really don't know what is (we're talking about high dilutions). Doesn't microdol have the same basic active ingredients..? I thought so.

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