Note: not that this looks like very typical x-ray damage. It's too localized and too neatly aligned with the edges of the film to my taste.
I'm pretty convinced this is (somehow) happening in camera, but I don't have an explanation how it can happen in multiple cameras with different shutter travel direction.
I recall your previous thread, logan2z, where none of us was able to identify the source of the problem but it would seem from the way you reintroduced us to this recurrence that the problem had disappeared for a while so it might be helpful if you were to remind us of what you did that eventually appeared to solve the problem and then say what, if anything, has changed in what you are now doing. By anything I mean anything at all you can think of, however inconsequential it may be
Otherwise I fear that all we will do again is give you a long list of what it might be as we are doing already. There has to be a means of eliminating some of the causes and even if not completely doing so at least stop the thread wandering into those more unlikely areas
I personally blame living in the SF Bay area but I was hoping to keep that in reserve until we have exhausted all other possibilities
pentaxuser
Does it only happen with FP4? I'm wondering if this is down to outside influences, rather than you. It's a band of increased density running along the length on the negative. The only time I had a band similar to that on film, was from xray machine, but the lines ran the width, not length.
.....
The Bay Area may well be to blame. Anyone else from the Bay Area having this problem? Must be something in the water...
No, it's happened with Tri-X as well. I've only just started shooting FP4 recently. This problem pre-dates that.
I haven't traveled anywhere by plane since the Covid pandemic hit, so none of this film has been through an X-ray machine. At least not since I purchased it.
Not to mention it doesn't have the density level I've seen in past posted examples of X-ray damage, nor does the fogging cross the rebate.
If they are on different films from different cameras then your processing is the problem. Try skipping the PhotoFlo. I never liked that stuff and stopped using it over two decades ago. Always had problems with streaks. Edwal LFN works well and never leaves any residue if you still want to use a wetting agent. I stopped using wetting agents years ago. These days I just hang the film to dry and wipe it with a KimWipe until the non emulsion side is dry. 120 film I just hang up.
As I'm reading it, those bands are parallel to the length of the film and don't intrude in the rebate between frames -- which rules out light leaks and makes developing error seem unlikely. If there were exposed in a camera with vertical traveling focal plane shutter, hesitation in the curtains (both together, presuming a fairly narrow slit for a bright outdoor scene) could result in bands like this. Have the previous problems always been with film from this camera?
Different films and different processing points to a camera problem.
Well are shooting at ghosts at this point. I had seen that he used multiple cameras but recently he was only using one. Some of us are actually taking time to help while others wish to take cheap shots.If anything, this thread is a hell of a good reading comprehension test!
After all the things that have been eliminated, I'm leaning this way too. Crimping or bending the film can cause exposed areas to react differently to developer resulting in areas of higher density.Might have to do with the way you load the reels...
Crimping actually crossed my mind at some point too, but I didn't see any physical signs of it on the film.After all the things that have been eliminated, I'm leaning this way too. Crimping or bending the film can cause exposed areas to react differently to developer resulting in areas of higher density.
Try loading your film on the reels starting with the other end a time or two and see if you get density stripes on frames 1, 2, 3...
Best,
Doremus
You don't happen to wear a shirt with a luminescent zipper closure do you?
To go with your flip flops, of course.
Nope, no luminous zippers - or flip-flops. I guess I'm not very 'California'
I forgot - San Francisco. Which means that through at least 3/4 of the year, you would need windbreakers for any flip-flops you might have.
Try ditching the pre-soak and machine agitations, use a forceful three tappings of the tank to dislodge any bubbles every time you agitate and, use a forceful drop and rise when agitate turning/rotating the tank bottom about a 1/3 to 1/2 at the end of each lowering of the tank during agitation.
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