Slight Issue Developing Expired Film

[Mephiloco]

I bought a lot of expired film for very cheap, figuring even if some of the rolls are bad I'll still have some shots etc etc. Anyways, something like 30 rolls for $30, including some HIE, some agfa, and generally all good film that I would buy and use normally (with the exception of maybe 2 rolls of kodak gold)

Anyways, I've shot 2 rolls so far, the first one being some Tmax 100 and the 2nd being some old emulsion Tri-X. Anyways, with both rolls, about every 8 frames or so I get a few frames ruined with some vertical black bars, getting darker each consecutive bar. They take up maybe 1/3 of a frame each bar, and eventually it's just completely black. Then it goes back to normal. The T-Max was first developed in Rodinal (tested to see if the film was dead) then I shot the rest of the roll and developed in DD-X. Just developed the Tri-X in DD-X and it suffers the same problem.

The film is washing right now, but once it's done I'll put up a pic of the frames in question. Anyways, does anyone have any idea what might be causing this? I'm wanting to make sure it's not the camera.

Edit: Looks like on the roll of tri-x it's just a band of black for about 2 or 3 frames, twice in the roll.

Edit #2: Scanning the roll of tri-x now, film has problems about every sprocket hole. Checking the other roll of film I shot after getting the camera back from DAG to see if it has any problems

 

[Tom A]

Depending how the film was stored - it could be light leaks from the felt trap. In this case it sounds more like a camera problem though.

 

[Mephiloco]

Scanning one of the gradient frames right now, but here are some other problems from the same roll. These were all shot on old tri-x, with a Summarit/1.5

This I think was caused by Don accidentally unpatching my shutter curtain while working on other things

Then these pinholes, I have no idea what caused them. Some frames in the roll have them (maybe 4) and most other don't

Then a crop of the above picture

 

[Mephiloco]

And here is the gradient problem. Usually goes from normal, to a few frames like this, progressively getting darker, then eventually about 3 frames will be completely black (overexposed) then back to normal.

 

[MartinP]

To eliminate damage to the o.o.d. film as the cause (could be x-ray, chemical or light fogging?) and check your camera try buying a new, cheap roll of colour-print film, shoot it off outside the shop using a wide range of shutter speeds, then get it developed. Total time maybe a couple of hours, which will give a much better idea of the source of the problem though possibly not the cause.

 

[Mephiloco]

I just grabbed the last roll of fresh film I shot with my M2 since getting it back, and it has the marks somewhat. If I look through the negative into light the negative is fine, and it scans fine, but if I hold it below a light and look down, I can see the vertical lines in nearly every frame

The lines are a little too uniform and don't really overexpose any of the frame, so I don't think it's from when I load the film into the reel (since I load in a closet that isn't completely light tight, but close enough). There are no black frames, or any of those dark gradients though. The only problems with the fresh roll were exposure problems from when the frames were shot.

 

[Mephiloco]

Anyone?




890

 

[Al Kaplan]

Radiation?