Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,285   Posts: 1,535,071   Online: 1097
      
Results 1 to 8 of 8
  1. #1
    Guillaume Zuili's Avatar
    Join Date
    Aug 2005
    Location
    Los Angeles & Paris
    Shooter
    Multi Format
    Posts
    2,639
    Images
    216

    TF-4 Question & Lith print

    Hi,

    Lith prints almost always bleach in the regular fix, and sometime I wish I could keep these delicate highlights I feel in the tray (without having to compensate with burning).
    So...
    What TF-4 does to a lith print ? Does it bleach or not, or less than acid fix ?
    Did anyone try ?

    Thanks.
    G.

  2. #2

    Join Date
    Feb 2010
    Location
    Montreal, Canada
    Shooter
    Multi Format
    Posts
    4,620
    I think it is more complicated than pH. TF-5 apparently doesn't bleach the image and it is slightly acidic (near neutral pH). Hopefully PE will respond with some more detail.

  3. #3
    Guillaume Zuili's Avatar
    Join Date
    Aug 2005
    Location
    Los Angeles & Paris
    Shooter
    Multi Format
    Posts
    2,639
    Images
    216
    Thanks Michael. TF4 & 5 I guess are quite different. Will try the 5.

  4. #4

    Join Date
    Feb 2010
    Location
    Montreal, Canada
    Shooter
    Multi Format
    Posts
    4,620
    Let us know how it goes. I believe PE formulated TF-5, or at least had something to do with it.

  5. #5
    Guillaume Zuili's Avatar
    Join Date
    Aug 2005
    Location
    Los Angeles & Paris
    Shooter
    Multi Format
    Posts
    2,639
    Images
    216
    He did on both.

  6. #6
    Dan Henderson's Avatar
    Join Date
    Feb 2005
    Location
    Blue Ridge, Virginia, USA
    Shooter
    4x5 Format
    Posts
    1,891
    Images
    241
    I have used TF4 and 5 on lith prints. Never really noticed that one bleached the highlights more or less than the other. As far as I know, it is a fact of life that fixer bleaches highlights. After several years lith printing I am still impressed at how a print lightens in the fixer under the safelight. So I just try to factor that into my exposure time to end up with the highlight level I want. For me, if I can just barely see a little color in the lightest portion of the fixed print, the dry down will give me just enough more.


    web site: Dan Henderson, Photographer.com

    blog: https://danhendersonphotographer.wordpress.com/

    I am not anti-digital. I am pro-film.

  7. #7
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    22,972
    Images
    65
    Bill Troop designed TF-4, and he and I did the work on TF-5.

    From reports I have, neither of these bleaches an image of any sort to any great extent. However, excessive times will cause bleaching of images. All fixers bleach silver given enough time.

    PE

  8. #8
    Guillaume Zuili's Avatar
    Join Date
    Aug 2005
    Location
    Los Angeles & Paris
    Shooter
    Multi Format
    Posts
    2,639
    Images
    216
    I have to do the same Dan but was hoping of a silver bullet :-)
    Thanks PE.
    I will do a test anyway to see the differences with my regular fix.
    Thanks everybody.

    G.



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin