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Thread: Use of X-ray film: technical discussion with example images

  1. #5851
    Tin Can's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Like!

    Pinhole size and duration?

    Quote Originally Posted by Andrew O'Neill View Post
    14x17 Pinhole; Double-sided green latitude. Developed in D-23 1+3

    1417 Pinhole Test Shot by Andrew O'Neill, on Flickr
    2022

  2. #5852
    おせわに なります! Andrew O'Neill's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Tin Can View Post
    Like!

    Pinhole size and duration?
    Pinhole size was about 1mm. Focal length was about 500mm. Exposure time was 25 minutes. I didn't bother with reciprocity correction as I didn't feel like standing there for an hour. Still turned out well.

  3. #5853
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    Re: Use of X-ray film: technical discussion with example images

    Thanks, I am not having luck with 1 mm pinhole, perhaps my duration is way too short


    Quote Originally Posted by Andrew O'Neill View Post
    Pinhole size was about 1mm. Focal length was about 500mm. Exposure time was 25 minutes. I didn't bother with reciprocity correction as I didn't feel like standing there for an hour. Still turned out well.
    2022

  4. #5854
    おせわに なります! Andrew O'Neill's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Tin Can View Post
    Thanks, I am not having luck with 1 mm pinhole, perhaps my duration is way too short
    I'm using mr. pinhole. You can generate an f/stop and exposure chart there. https://www.mrpinhole.com/calcpinh.php

  5. #5855
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Andrew O'Neill View Post
    I'm using mr. pinhole. You can generate an f/stop and exposure chart there. https://www.mrpinhole.com/calcpinh.php
    I use him constantly

    I may have the wrong hole in my 1 mm

    I am going to make my own pinholes shortly
    2022

  6. #5856

    Re: Use of X-ray film: technical discussion with example images

    Today three 18x24cm Sinar Norma Lisco holders arrived from Germany. These will hold 18x24cm Kodak Mammography film, going into my 8x10 Sinar Norma

    XRAY is a good way to learn large format handling and procedures.
    “The secret of getting ahead is getting started.”
    ― Mark Twain

  7. #5857
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    Re: Use of X-ray film: technical discussion with example images

    Perfect!
    2022

  8. #5858

    Re: Use of X-ray film: technical discussion with example images

    Sinar Norma 18x24 Lisco Holders by Nokton48, on Flickr

    Three additional original Sinar Norma era 18x24cm Lisco holders. They came from Germany good deal but no dark slides. Catlabs has replacements at what I thought was a fair price so now cleaning these up to use.

    These will hold 18x24 Kodak single sided Mammography film. I have about 500 sheets in stock so set for a while. The 8x10 Norma grounglass is very accurately marked for use with these holders.

    Sinar Norma 18x24 Lisco Holders XRAY by Nokton48, on Flickr

    As you can see the 18x24cm Mammo XRAY stock fits perfectly in the Norma holder. This will make nice size contact prints. I envision split printing these negs. I got the idea for a contact printing light source that works with the big Multigrade filters. the idea came from Tim Layton and I followed his lead. These negs could benefit from being split-filtered to really nail the tonality.
    “The secret of getting ahead is getting started.”
    ― Mark Twain

  9. #5859
    おせわに なります! Andrew O'Neill's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    "Sam"

    14x17 double-sided green. 355mm Meniscus lens with cardboard aperture of about f/11 @ about 1sec. D-23 1+3. 10:00 20C. Flat-bottomed tray with gentle agitation every minute.



    Sam by Andrew O'Neill, on Flickr

  10. #5860
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    Re: Use of X-ray film: technical discussion with example images

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    Quote Originally Posted by Andrew O'Neill View Post
    "Sam"

    14x17 double-sided green. 355mm Meniscus lens with cardboard aperture of about f/11 @ about 1sec. D-23 1+3. 10:00 20C. Flat-bottomed tray with gentle agitation every minute.
    2022

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