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  1. #1

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    Forte Polywarmtone Paper Speeds

    I was just given a couple of opened 25-sheet packs of Forte Polywarmtone FB paper (one is Elegance PWT Art with an ivory finish, the other PWT with a glossy finish). To maximize their use in printing negatives I need to know the ISO speed of these papers. If you know what those speeds are, or have a reference to where I can find them, please let me know.

    If such data are not available, I'll need to determine the speeds myself; probably with cut sheets to conserve paper.

    TIA,

    Rich

  2. #2
    ath
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    You can take the values from the ADOX Polywarmtone, it is the same paper.
    However, I'm under the impression, that these values are not very correct. Polywamtone is roughly 4 times (2 stops) slower compared to Ilford MG IV or Agfa MCP.
    Last edited by ath; 01-15-2008 at 03:14 PM. Click to view previous post history. Reason: changed link to english version
    Regards,
    Andreas

  3. #3
    naaldvoerder's Avatar
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    Is this helpfull?


    ILFORD filters
    Parameters without 00 0 1 2 3 4 5
    R 100 150 130 110 90 80 70 60
    P 160 50 50 50 50 40 25 25

    KODAK filters
    Parameters without -1 0 1 2 3 4 5
    R 100 140 120 110 100 90 70 60
    P 160 100 100 100 100 80 25 25

    DURST color enlarger head
    Parameters without 150Y 100Y 30Y 20M 50M 100M 150M
    R 100 150 130 100 90 80 70 70
    P 160 50 64 100 100 80 64 50

    Saved from Forte's website

    Jaap jan

  4. #4

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    Thank you Andreas and Jan.

    When I searched the Web with Google for the paper speed the Forte website did not show up. Since I have a color head on my Beseler enlarger, I can convert the Durst values.

    Much appreciated,

    Rich

  5. #5

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    If the packages are sealed, there should be a datasheet. If not, I could send you a scan if you want. Let me know.

  6. #6
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    Quote Originally Posted by rshepard View Post
    SNIP.... Forte Polywarmtone FB paper (one is Elegance PWT Art with an ivory finish, the other PWT with a glossy finish). end snip
    TIA,

    Rich
    I have the poop sheet from a box of Polygrade V Elegance Fiber Based Paper that says the papers ISO speed is 400 without filtration.

  7. #7
    ann
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    the polywarmtone is 160 if i remember correctly. the paper Bruce is talking about is not the same paper.
    http://www.aclancyphotography.com

  8. #8

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    Quote Originally Posted by bdial View Post
    If the packages are sealed, there should be a datasheet. If not, I could send you a scan if you want. Let me know.
    Thank you. That would be handy to have. I'll give you my email address in a private message so it's not too available for spammers.

    Rich

  9. #9

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    Quote Originally Posted by ann View Post
    the polywarmtone is 160 if i remember correctly. the paper Bruce is talking about is not the same paper.
    Ann,

    That's in line with the first two replies. Thank you very much.

    Rich

  10. #10

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    g'day Rich

    how is it useful to know the ISO of printing paper?

    Ray

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