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

  1. #5931

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

    Quote Originally Posted by Neil Purling View Post
    The first X-ray film I got was via Forum members. This is medical stuff. Then I got a huge amount of Foma Indux R4 4x5, this is industrial use film.
    It seems to be 6 ASA at best. I am still not altogether sure of that because then I was shooting at around 2:00pm on a winter's day (January) & the sun was already low.
    I think that I have the right development time...
    A non-colour sensitive film does not seem to have a fixed 'speed'. I'm thinking approx 3 ASA when the sun is low, as it was that January day. Then maybe as high as 10 ASA at mid-day in the summer months.
    It makes a shoot interesting. Thank goodness landscapes don't move.
    you need to meter your lighting through a filter that mimics the sensitivity curve of your film.

  2. #5932

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

    I was given some X-Ray film which just says 50 ASA double sided on the box but something is bothering me about it.

    When I expose it and develop it, there is an image there which scans perfect (not tried wet printing) but yet looking at the negative, it looks almost black.

    Is this normal for double sided x-ray film ?

  3. #5933
    Tin Can's Avatar
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    Re: Use of X-ray film: technical discussion with example images

    No

    But very thin XRay scans well
    image

  4. #5934

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

    Quote Originally Posted by Tin Can View Post
    No

    But very thin XRay scans well
    Any ideas as to why the developed film looks so dark as though it well over exposed. Ive tried it at various ISO speeds but i always looks the same

  5. #5935

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

    It most likely is over-exposed. Have yu tried it at a speed of 100? 200?
    What developer and for how long?
    I have found that most x-ray films will yield a reasonable negative at a speed of 100, exposed during the middle of the day.
    Perhaps your developer is too active. Have you ried diluting it 1 part developer and 2 parts water?
    Are you developing under a red safelight kept at least 4 ft away? This wil give yo the oportunity to watch it develop, andmy money is on your under-developing in the beginning.

  6. #5936

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

    Quote Originally Posted by Jim Noel View Post
    It most likely is over-exposed. Have yu tried it at a speed of 100? 200?
    What developer and for how long?
    I have found that most x-ray films will yield a reasonable negative at a speed of 100, exposed during the middle of the day.
    Perhaps your developer is too active. Have you ried diluting it 1 part developer and 2 parts water?
    Are you developing under a red safelight kept at least 4 ft away? This wil give yo the oportunity to watch it develop, andmy money is on your under-developing in the beginning.
    I haven't tried it as high as ISO 100

    I am using D76 Stock for 6 minutes
    I am under a Red Light but havent had it on during development because its fairly close to the tray

  7. #5937

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

    5x7 Sinar Norma Twin Lens HRU Ortho+Mic-X by Nokton48, on Flickr

    Here's a quick comparison between Ilford Commercial Ortho +, and Fuji double sided HRU XRAY film. I believe the "look" is part of the nature of this film, it's not intended for pictorial photography. Highlights develop quickly and spectral response may be a bigger factor as well. The film base is thin and extremely delicate to handle, and "blooming" due to lack of antihalation backing is a known property. It is not long scale material IMO.

    If you like "beefy" negatives it can work very well. Cheap as dirt is a big plus. Great for testing
    Flikr Photos Here: https://www.flickr.com/photos/18134483@N04/

    “The secret of getting ahead is getting started.”
    ― Mark Twain

  8. #5938

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

    This is what it looks like holding the negative up to the window

    Click image for larger version. 

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  9. #5939
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    Re: Use of X-ray film: technical discussion with example images

    Any data on bo

    Quote Originally Posted by IanBarber View Post
    This is what it looks like holding the negative up to the window

    Click image for larger version. 

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    image

  10. #5940

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

    Quote Originally Posted by Tin Can View Post
    Any data on bo

    All it says is Kodak Tmat GR Double sided ISO 50

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