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Registered Member #9290
Joined: Sat Jan 05 2013, 03:42PM
Location:
Posts: 60
If so, I have some questions I'd like to ask. I recently picked up the Fuji film and a Yankee 4x5 tank. I want to cut the film to fit into the tank, take some exposures, and then develop the film. Running into material and process issues, though, so if anyone has worked with this or similar film, I'd appreciate your response to this thread. Thanks.
Registered Member #33
Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
I've worked with similar film. Do you have any specific questions or are you just looking for general advice? Be careful when you cut the film, it's easy to scratch the emulsion. Will you be exposing it directly or in an x-ray cassette?
Registered Member #9290
Joined: Sat Jan 05 2013, 03:42PM
Location:
Posts: 60
Wolfram, thanks for your response and sorry for the delay. My job and life have gotten in the way since my original post :).
Anyway, the idea was to use that film in an x-ray cassette that has an intensifying screen. I have two such cassettes already, one slightly smaller than the other.
To jump ahead, I tried some exposures today, but hardly anything turned out correctly. I did cut the film down as I knew I'd just be doing test exposures first and was careful and did not seem to get too many scratches.
I tried x-raying a flower that had been doped with KI for a few days first. I knew this would be a good test as I was able to get it to show with a last batch of "instant" film I had here. However, none of the exposures with the x-ray film turned out well. I was using around 35-40 KV @ 1 mA or less. I tried exposure times of 3 min with cassette and intensifying screen. This worked, but the resolution was poor and the image seemed way overexposed. Then I tried 10 sec, same conditions, and nothing. I then removed the intensifier screen from the cassette and did a 3 min exposure.... nothing.
I'm wondering if my developer (D-76) might be at fault. I mixed it according to the directions here:
However, since I was trying less than 4x5" size and only needed small quantity, I proportioned what he says there (7.5 oz developer powder in 64 oz water) down to 1 oz developer in 8 oz water. I then diluted this by 50% by adding and additional 8 oz of water. I then let it sit and cool overnight before using it. For the 1st 3 min exposure in cassette with screen, I must have developed for at least 15 min; and at least 25 min or more with the ones with no screen. I was also working under a red safelight, the one here. I'm just wondering if I didn't mix the proper amount of water with the D-76 or something.
Anyway, other than the developer, not sure what else could be giving me either too much or not enough exposure.
Appreciate any ideas you'd have. I checked the archives and it seems folks were getting decent results in 1 min or so with similar settings to mine. Thanks in advance.
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anyone work with Fuji HR-T 8x10 x-ray film daylight tank?
