Artifacts on the negative

ivenhoe · Sep 9, 2024

What do you think caused this type of artifacts on the negative?
It's Fomapan 100 pushed 1 stop in D76. Actually I expected something like this, because the film stayed in the camera for 1 year.
But I just want to make sure it's not the development or camera issues.

Saganich · Sep 9, 2024

I'm assuming all three in same camera and the 3rd image is cropped square? Not likely a development issue in so far as chemistry, agitation, etc. is concerned. Looks like light leak from camera combined with long storage in camera under non-ideal conditions.

ivenhoe · Sep 9, 2024

Saganich said:
I'm assuming all three in same camera and the 3rd image is cropped square? Not likely a development issue in so far as chemistry, agitation, etc. is concerned. Looks like light leak from camera combined with long storage in camera under non-ideal conditions.

These are all crops from the same 35 mm camera, and yes, the conditions were quite far from ideal, hot, humid and a lot of flight scans.

lamerko · Sep 9, 2024

Maybe some oiliness on the emulsion side that was inhibiting the penetration of the chemistry...

jeffreyg · Sep 9, 2024

I don’t think it was flight scans That would fog the film. I had the displeasure of that about a year ago. I didn’t have time for a hand inspection and I believe they were using the new ct scanner’s. The film was fogged but I was able to salvage most by scanning and PhotoShop. I was positive that was the case because I didn’t develop all at the same time and other rolls from the same batch that I didn’t take with me were not fogged. The film was Ilford Delta 400 120 which I have used for many years and have taken it on many flights before both hand checked and scanned. With the new scanners being installed go early and request hand checking.

koraks · Sep 9, 2024

jeffreyg said:
I don’t think it was flight scans That would fog the film.

No, that looks quite different from this.

It looks like the emulsion got a little moist and stuck to something. Probably just condensation as a result of normal cooling/heating cycles. A year inside a camera is a long time and under less than optimal storage conditions, this is the kind of funkiness you can expect to happen.

ivenhoe said:
it's not the development or camera issues.

It's not likely to be development-related. Not necessarily camera-related, either - just don't leave film this long inside a camera.

250swb · Sep 10, 2024

I agree with the idea from @koraks the film has stuck to itself, certainly the last image shows a typical pattern plus striations where it has unstuck. Pre-wetting the film may have evened out some of the problem but everything is easy in hindsight.

loccdor · Sep 10, 2024

If anything stays rolled up too long in heat, cold, and moisture cycles the layers can start to separate and rub off where they touch. It happens, for example, with acrylic paintings wrapped up in cellophane too long, some of the paint transfers to the plastic film.

Light leaks would brighten rather than darken the images, and they wouldn't have such a finely-textured pattern.

Artifacts on the negative

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Artifacts on the negative

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