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

  1. #5431
    Peter De Smidt's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    John, How's your filmspeed with Pyrocat? Mine was very low when I tested it with Fuji green.
    Please stop feeding the trolls.

  2. #5432

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

    Yes,the film is far more vulnerable when wet than when dry.

  3. #5433
    Recovering Leica Addict seezee's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Jim Noel View Post
    I prefer a slick bottomed tray w/o ridges. Never a scratch with these.
    +1 on this.
    "Never try to teach a pig to sing. It wastes your time and annoys the pig."

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  4. #5434
    Recovering Leica Addict seezee's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by j.e.simmons View Post
    I use hangers in the traditional way and Pyrocat. I very rarely get scratches. That makes me think the scratching comes when the film is wet, not when it is dry.
    The emulsion is much softer when it is wet, hence easier to scratch. But you can scratch it when it's dry too.
    "Never try to teach a pig to sing. It wastes your time and annoys the pig."

    seezee at Mercury Photo Bureau
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  5. #5435

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

    Peter, I use the Carestream green and it seems pretty slow. I use BTZS, so I’m not sure how to translate it to an iso.

  6. #5436
    Peter De Smidt's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    Thanks, John.
    Please stop feeding the trolls.

  7. #5437
    David Schaller
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    Re: Use of X-ray film: technical discussion with example images

    I took my first shot today with the EKTASCAN B/RA single-sided film. I seem to have some uneven development, and I hope to get a diagnosis. I would like to keep using Pyrocat HD, so my main questions have to do with presoak, dilution and agitation. Should I not presoak? Should I presoak longer? Agitate less? More dilute?


    You should be able to see the problems in the upper left and lower middle. I couldn’t scan the negative (computer problems with darkroom computer), so I took a quick iPhone shot and inverted it.


    I rated it at 80, at noon in overcast snowy weather. My development procedure, in smooth bottom 11x14 trays was:
    1. 2 minute presoak with intermittent agitation in 70 F water
    2. Pyrocat HD 1:1:100 @70F for 6 minutes with constant agitation for the first minute, then for 10 seconds every minute.
    3. Water stop for 2 minutes with constant agitation.
    4. TF 4 Fixer for 4 minutes with constant agitation for the first minute and every 30 seconds after.
    5. Wash for 15 minutes in running water.
    6. LFN 3 drops in 2 liters of water
    7. Hang to dry.

    Thanks in advance for any suggestions for me for processing the second negative of this shot.
    Dave

    PS. I did use the recommended red LED safelight, more than 6 feet away, pointed away from the sink.

  8. #5438
    Peter De Smidt's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    I had similar results with a different developer. I've stopped using the film for that reason. Hopefully, you'll figure it out, but I lacked the patience.
    Please stop feeding the trolls.

  9. #5439
    David Schaller
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Peter De Smidt View Post
    I had similar results with a different developer. I've stopped using the film for that reason. Hopefully, you'll figure it out, but I lacked the patience.
    Well it’s getting me using the 8x10, so even if I don’t get it worked out perfectly, it is a low cost way to practice before using the expensive films. I’m going to try to methodically figure this out.

  10. #5440

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

    Check your safelight; this may just be optical fogging of the film.

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