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Thread: keeping the paper flat....

  1. #1

    Join Date
    Aug 2006
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    78

    keeping the paper flat....

    hey all,
    i seem to be having an issue with keeping my ilford warm tone fiber flat on the easel.
    any ideas?
    using a saunders 4 blade easel and a lpl 4550 enlarger
    thanks!

  2. #2
    Maris Rusis's Avatar
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    May 2006
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    Noosa, Australia.
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    Re: keeping the paper flat....

    Paper flatness is not at all critical for most enlarging ratios. The image depth of field at the easel level is several millimetres and a good 4 blade easel will hold paper much flatter than is actually needed. On the other hand depth of focus at the negative level is very small and a tiny change of focus makes a big difference in the sharpness of the projected image.
    Photography:first utterance. Sir John Herschel, 14 March 1839 at the Royal Society. "...Photography or the application of the Chemical rays of light to the purpose of pictorial representation,..".

  3. #3

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    Aug 2006
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    Re: keeping the paper flat....

    @maris,
    ok so i am getting sections of the print that are out of focus while most of it is in focus.
    the negative is sharp and is not the problem
    any recommendations?

  4. #4

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    Re: keeping the paper flat....

    We need more details. Is the paper held down on the edges, or not? If it is, does it pop up in the middle?

    Have you aligned the enlarger with the baseboard? You can do this by taking a scrap negative, cutting an "X" in the emulsion from corner to corner with a needle, etc., putting it in the enlarger and focusing one of the corners. You can usually do this "by eye". If all the corners are not sharp, you need to align the enlarger and the baseboard. Check you owner's manual.

  5. #5

    Join Date
    Aug 2006
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    78

    Re: keeping the paper flat....

    hi
    using a saunders 4 blade easel and a lpl 4550 enlarger
    the enlarger is a one post and head enlarger on a baseboard so theres no alignment option
    the easel is holding down the paper but i am getting areas of out of focus while the negative is tack sharp
    using Ilford warmtone fiber 11x14 paper

  6. #6
    Jac@stafford.net's Avatar
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    Re: keeping the paper flat....

    Quote Originally Posted by dave4242 View Post
    hi
    using a saunders 4 blade easel and a lpl 4550 enlarger
    the enlarger is a one post and head enlarger on a baseboard so theres no alignment option
    the easel is holding down the paper but i am getting areas of out of focus while the negative is tack sharp
    using Ilford warmtone fiber 11x14 paper
    I built a platform on top of the base board to support a Saunders 16x10 easel. It has three level screws to bring it to absolute alignment. I'm sure several of us can elaborate if necessary.
    .

  7. #7

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    Re: keeping the paper flat....

    @jac
    ok thanks appreciate the insight

  8. #8

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    Re: keeping the paper flat....

    There may not be an option to adjust it, but a scratched negative is still a good test -- unless you have a focusing aid that you can use in each corner. If nothing else, open up the lens all the way and tell us if the image on the easel appears focused in ALL corners -- WITHOUT the paper.

  9. #9
    Tim Sandstrom
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    May 2006
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    San Jose, CA
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    Re: keeping the paper flat....

    I keep small flat magnets on each blade, but I'd check the alignment as well...

  10. #10
    Jac@stafford.net's Avatar
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    Re: keeping the paper flat....

    Quote Originally Posted by dave4242 View Post
    @jac
    ok thanks appreciate the insight
    Stay tuned. I will be situated to inform in detail in a week or so.
    .

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