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Thread: ANSI Film Holder Details

  1. #31
    animaux's Avatar
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    Re: ANSI Film Holder Details

    Unsatisfied with Edward A. Hoover’s extract of the specifications, I created a more complete table of the measurements with my own illustrations. It’s in original metric units though.

    Now available at the same address here: https://temp.animaux.de/filmholders.html

    May the tinkering begin!

  2. #32

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    Re: ANSI Film Holder Details

    Quote Originally Posted by animaux View Post
    Unsatisfied with Edward A. Hoover’s extract of the specifications, I created a more complete table of the measurements with my own illustrations. It’s in original metric units though.

    Now available at the same address here: https://temp.animaux.de/filmholders.html

    May the tinkering begin!
    Where did you find the original document to develop yours from?

  3. #33
    Tin Can's Avatar
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    Re: ANSI Film Holder Details

    Well done!

    As good as it gets. That's a compliment.

    I find 'H' slightly tight. Many existing holders have greater 'H' as my Kodak sheets are loose. 0.007" film plus emulsion.

    I realize it's a min value. I hope new 'makers' realize that.

  4. #34
    animaux's Avatar
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    Re: ANSI Film Holder Details

    Quote Originally Posted by williaty View Post
    Where did you find the original document to develop yours from?
    A friend had a copy.

  5. #35
    animaux's Avatar
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    Re: ANSI Film Holder Details

    Quote Originally Posted by Randy Moe View Post
    Well done!

    As good as it gets. That's a compliment.

    I find 'H' slightly tight. Many existing holders have greater 'H' as my Kodak sheets are loose. 0.007" film plus emulsion.

    I realize it's a min value. I hope new 'makers' realize that.
    Cheers! Hope it helps! My holders can all take print paper too. I wonder how thick that is.

    The main a-ha from the original spec was that most values are min- or max-values.

  6. #36

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    Re: ANSI Film Holder Details

    That's the clearest example of film holder dimensions I've seen. Thanks!
    The A min for 8x10 holders looks wrong, though.

    Kumar

  7. #37
    Tin Can's Avatar
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    Re: ANSI Film Holder Details

    Quote Originally Posted by animaux View Post
    Cheers! Hope it helps! My holders can all take print paper too. I wonder how thick that is.

    The main a-ha from the original spec was that most values are min- or max-values.
    Ya, I looked you up, you do a lot of paper negs.

    I just miked processed MG RC at 0.010" I make you convert. All my tools are SAE.

  8. #38

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    Re: ANSI Film Holder Details

    Quote Originally Posted by B.S.Kumar View Post
    That's the clearest example of film holder dimensions I've seen. Thanks!
    The A min for 8x10 holders looks wrong, though.

    Kumar
    Compare Amin to Gmax on 5x7 doesn't make any sense either. The specs say that the overall length of the film holder has to be a minimum of 100mm-ish (4 inches) past the lock rib. I've never seen a 5x7 holder more than 50mm past the lock rib.

  9. #39

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    Re: ANSI Film Holder Details

    Amin for 11x14 and 14x17 can't be right either as that would make the length of the film holder smaller than the film in the holder!

  10. #40
    Jim Jones's Avatar
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    Re: ANSI Film Holder Details

    This is a great service to the large format community. I could never have done as well. A more compact format may be more convenient to the user.

    A min for 5x7 through 14x17 are transposed. A min for 5x7 should be 213.92: for 8x10, 295.28; for 11x14, 411.18: for 14x17, 496.90

    G min for 8x10 should be 275.34. not 275.53

    You have transcribed the T distance for 11x14 and 14x17 exactly as it is in ANSI/PIMA IT3.108-1998 including the inconsistency in the original.

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