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

  1. #5341

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

    Okay thanks. I mean, would using 1:1 really cause it to be completely washed out like that? I'll try again I guess. The safelight i'm using is a large xmas light. Could that be affecting anything?

  2. #5342
    Les
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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Andrew O'Neill View Post
    Since I've been playing around with Adox CMS 20II and POTA, I thought I'd develop some double-sided green latitude xray in POTA. I normally process with Pyrocat-HD and I wanted to see how it would look. Both sheets were developed for 8:00. The sheet on the left was in straight POTA. The one on the right, POTA 1+1. Tray developed (flat-bottomed). Slight agitation every minute. 24C. Reciprocity correction was given for both...4sec became 8sec.

    Attachment 191421Attachment 191422
    Which look do you prefer, Andrew ? The one on the left seem to resemble Dev 23 (to me)....maybe it's the bright chair (in the right pic) that's not to my liking.

    Les

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

    Quote Originally Posted by kendolinator324058943 View Post
    Okay thanks. I mean, would using 1:1 really cause it to be completely washed out like that? I'll try again I guess. The safelight i'm using is a large xmas light. Could that be affecting anything?
    Possibly. It may not be a true red, or be leaking some white light somewhere.

  4. #5344
    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 kendolinator324058943 View Post
    Okay thanks. I mean, would using 1:1 really cause it to be completely washed out like that? I'll try again I guess. The safelight i'm using is a large xmas light. Could that be affecting anything?

    Yes. The Christmas bulb most likely is a major issue. It's not "safe". And yes, 1+1 dilution is pretty strong (in my experience of 11 years using xray film). I prefer a longish development time. 8 to 10 minutes (dilute Pyrocat-HD).

  5. #5345

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

    So it was the red light. I developed it it in complete darkness and it turned out ok.

    On another note, I developed a piece of Orth Litho 3.0 with the last sheet of xray and it came out blank, almost transparent but not quite. Is this because i'm not using the Litho a/b developer?

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

    may2019-020 by Vance, on Flickr

    may2019-013small by Vance, on Flickr

    Here are two recent (very different) x-ray shots of mine. These were shot on Fuji green film, cut down to 4x5. The bulb was shot at f:64 for 300 seconds. I was at about 2.5:1 magnification and took a wild stab in the dark for reciprocity.

    The portrait was (memory is fading) f5.6 for 1/15th of a second.

    Both were processed in hc-110 1:70 for 6 minutes in a rotary tank.

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

    Nice Lance!

    This was shot on cut 5X7 X-Ray, then made FP4 4X5 inter-negative enlarging to 16x20 negative print. It was lit, but dimmed way down at about 3-1 macro.

    I have posted it before, but one good bulb deserves another...I call it Atomic Bomb.

    Atomic Bomb by TIN CAN COLLEGE, on Flickr
    Tin Can

  8. #5348
    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 kendolinator324058943 View Post
    So it was the red light. I developed it it in complete darkness and it turned out ok.

    On another note, I developed a piece of Orth Litho 3.0 with the last sheet of xray and it came out blank, almost transparent but not quite. Is this because i'm not using the Litho a/b developer?
    Please order one or two of these. Use them with a reflector-type shop light pointed away from your work area (bounce the light off the ceiling). If you use two bulbs together you'll want this adapter.
    "Never try to teach a pig to sing. It wastes your time and annoys the pig."

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

    Quote Originally Posted by blue4130 View Post
    The portrait was (memory is fading) f5.6 for 1/15th of a second.
    Window light? What time of day?
    "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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    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by seezee View Post
    Window light? What time of day?
    Indirect window light, about 2 pm Beijing haze. Not sure what that compares to as far as Oklahoma light. Guessing you are brighter with less pollution

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