How, was I to get more consistent agitation? I then remembered that when I got my Jobo CPE2 it came with a print tank extension 2800 so I dug this out of the garage. Well, this just confirmed the agitation variation theory I was quite aggressive in the agitation frequency as it seems and now I got those marks in a cross pattern corresponding to the opposite corner tilt technique. I must add that I have no dark facilities. So, I change the processing technique to a tilt one which you would do with standard tray development.
So I observed the movement of the fluid in the processor with the lid off and noticed that there was an area in the middle that was did not experience as much fluid change with the orbital movement. I have been using a Paterson orbital and noticed that there was a circular area in the middle of the negative that was affected most with these black dots (in the positive image). OK, what I have learned is that this film is extremely sensitive to agitation in development. In conclusion, this method might be worth looking into, only if you have a motorized roller base, *and* you shoot a relatively small amount of film. Half of them single-sided mammography film, and half double sided.ġ refused to come out for washing (even though after fixing I place the tubes vertically in the sink and fill them with water to reduce friction), resulting in two massive scratches on the back side.ġ came out with streaks of uneven development (no idea why).Īlso, I don't have a motorized roller base (had plans of building one if/when I concluded that this developing method works for me), and I can tell you that manually rotating the tubes for 16min for each sheet gets old real fast. Now, since my last post I developed 10 more sheets of 18x24cm film. Randy (and anyone else who might be interested),įinally took some pictures of the PVC tubes that I mentioned testing.īottom pics from left to right, looking through:ġ3x18cm/5x7" tube (with the "stopper" of the coupling protruding, which helps the two negs stay away from each other) If you get a chance, perhaps post a picture of your tube assembly some time - or if there is one already posted somewhere, can you direct me to it.
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