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

[chris73]

A few experiments with Fuji Super HR-U 30 expired since...2009
Rated ISO 50, 9x12 camera.
Just for reference i photographed the negatives with a m43 camera...

Development in Caffenol Black (no vitamin C) for 50-60mins, 21oC stand or semi-stand, gives as expected low contrast but a very interesting... pictorrealistic outcome, or like a pencil drawing touch




Then i tried Ilfosol 3. A good starting point i think is something like:
ISO 50
Ilfosol 3 , 19+1 dillution, 21oC.
4min
Constant aggitation the first minute, 5-6 aggitations every next minute.



With yellow filter 2x i had to overexpose 3 stops

[andrewch59]

Your experiments have been fruitfull, I think your results are very promising, well done

[pepeguitarra]

I have not read the 532 pages, so, can anyone tell me how you deal with reciprocity with X-ray film. Thanks, Pepe.

[scheinfluger_77]

At the risk of being flippant, test with your workflow. When I read through the thread that was the overwhelming consensus, regardless of the particular question.

[Tin Can]

Pepe, most here do not shoot very long exposures.

I think I saw only one or two post about it. I have read most of the thread.

It is hard to search for but I just found these links in google. I used your words to search, there is a lot out there.

google search "reciprocity with X-ray film"

https://pubs.rsna.org/doi/10.1148/42.5.471

https://www.photrio.com/forum/thread...-effect.62519/

https://www.largeformatphotography.i...=1#post1296352

[pepeguitarra]

Thank you Randy. I found the links very useful, specially the last one. I am doing my own test, that is the reason I wanted to compare with others. I found that if I don't adjust for reciprocity, I can develop the film without any problem. I tested up to one minute without problem. When I tested for three minutes, I did noticed an over exposure (that is what I did yesterday), which prompted me to ask the question. The negs are still drying, so, I will post the result of this last try later.

[chris73]

Your experiments have been fruitfull, I think your results are very promising, well done

Thank you. It is a great fun anyway

[Jim Noel]

I have not read the 532 pages, so, can anyone tell me how you deal with reciprocity with X-ray film. Thanks, Pepe.

Pepe,
Since X-ray film is truly orthochromatic itis sensitive only to blue light. Thus, as the sung heads for the horizon, the film slows down accordingly and I Know of no one who is using it in situations which require long exposures. I guess there are those who use extremely small apertures and might runinto reciprocity, but I haven't heard of them.

[Andrew O'Neill]

Pepe,
Since X-ray film is truly orthochromatic itis sensitive only to blue light. Thus, as the sung heads for the horizon, the film slows down accordingly and I Know of no one who is using it in situations which require long exposures. I guess there are those who use extremely small apertures and might runinto reciprocity, but I haven't heard of them.

Well, I've used it all the time for long exposures. The fastest shutter speed for me was one second... still need compensation. Very poor reciprocity. Randy linked to my data that I've been using successfully for many years in the field.

[Jim Noel]

Well, I've used it all the time for long exposures. The fastest shutter speed for me was one second... still need compensation. Very poor reciprocity. Randy linked to my data that I've been using successfully for many years in the field.

I have referred Pepe to you as a source concerning reciprocity.